chore: update multichain interfaces (#1433)

**Motivation:**

Small typos in multi chain interfaces. Also, we use absolute imports,
which can cause integration difficulties.

**Modifications:**

Fix typos. Use relative imports. 

**Result:**

Cleaner interfaces.

Author: ypatil12

src/contracts/interfaces/IBN254CertificateVerifier.sol

@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
-import "src/contracts/interfaces/ICrossChainRegistry.sol";
-import "src/contracts/interfaces/IBaseCertificateVerifier.sol";
-import "src/contracts/interfaces/IBN254TableCalculator.sol";
+import {BN254} from "../libraries/BN254.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
+import "./IBN254TableCalculator.sol";
+import "./IBaseCertificateVerifier.sol";
 
 interface IBN254CertificateVerifierTypes is IBN254TableCalculatorTypes {
     /**
@@ -42,7 +42,7 @@ interface IBN254CertificateVerifierEvents is IBN254CertificateVerifierTypes {
 }
 
 /// @notice An interface for verifying BN254 certificates
-/// @notice This implements a base interface that all curve certificate verifiers (eg. BN254, ECDSA) must implement
+/// @notice This implements the base `IBaseCertificateVerifier` interface
 interface IBN254CertificateVerifier is IBN254CertificateVerifierEvents, IBaseCertificateVerifier {
     /**
      * @notice updates the operator table

src/contracts/interfaces/IBN254TableCalculator.sol

@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/BN254.sol";
-import "src/contracts/libraries/OperatorSetLib.sol";
+import {BN254} from "../libraries/BN254.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
 
 interface IBN254TableCalculatorTypes {
     /**

src/contracts/interfaces/IBaseCertificateVerifier.sol

@@ -1,22 +1,10 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
-import "src/contracts/interfaces/ICrossChainRegistry.sol";
+import "./ICrossChainRegistry.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
 
-interface IBaseCertificateVerifierTypes is ICrossChainRegistryTypes {
-    // TODO: use the `KeyType` from `KeyRegistrar`
-    /**
-     * @notice The type of key used by the operatorSet. An OperatorSet can
-     * only generate one Operator Table for an OperatorSet for a given OperatorKeyType.
-     */
-    enum OperatorKeyType {
-        ECDSA,
-        BN254
-    }
-}
-
-interface IBaseCertificateVerifierEvents is IBaseCertificateVerifierTypes {
+interface IBaseCertificateVerifierEvents {
     /// @notice Emitted when the owner of an operatorSet is updated
     event OperatorSetOwnerUpdated(OperatorSet operatorSet, address owner);
 
@@ -41,8 +29,12 @@ interface IBaseCertificateVerifierErrors {
 
 /// @notice A base interface that verifies certificates for a given operatorSet
 /// @notice This is a base interface that all curve certificate verifiers (eg. BN254, ECDSA) must implement
-/// @dev A single `CertificateVerifier` can be used for ONLY 1 operatorSet
-interface IBaseCertificateVerifier is IBaseCertificateVerifierEvents, IBaseCertificateVerifierErrors {
+/// @dev A single `CertificateVerifier` can be used for multiple operatorSets, but a single key type
+interface IBaseCertificateVerifier is
+    IBaseCertificateVerifierEvents,
+    IBaseCertificateVerifierErrors,
+    ICrossChainRegistryTypes
+{
     /// @notice the address of the owner of the OperatorSet
     function getOperatorSetOwner(
         OperatorSet memory operatorSet

src/contracts/interfaces/ICrossChainRegistry.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
 
 interface IOperatorTableCalculator {
 // TODO: implement, stub for now
@@ -91,7 +91,7 @@ interface ICrossChainRegistry is ICrossChainRegistryErrors, ICrossChainRegistryT
     /**
      * @notice Adds a chainID to the whitelist of chainIDs that can be transported to
      * @param chainID the chainID to add to the whitelist
-     * @dev msg.sender must be UAM permissioned for operatorSet.avs
+     * @dev msg.sender must be the owner of the CrossChainRegistry
      */
     function addChainIDToWhitelist(
         uint32 chainID
@@ -100,7 +100,7 @@ interface ICrossChainRegistry is ICrossChainRegistryErrors, ICrossChainRegistryT
     /**
      * @notice Removes a chainID from the whitelist of chainIDs that can be transported to
      * @param chainID the chainID to remove from the whitelist
-     * @dev msg.sender must be UAM permissioned for operatorSet.avs
+     * @dev msg.sender must be the owner of the CrossChainRegistry
      */
     function removeChainIDFromWhitelist(
         uint32 chainID

src/contracts/interfaces/IECDSACertificateVerifier.sol

@@ -1,10 +1,9 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
-import "src/contracts/interfaces/ICrossChainRegistry.sol";
-import "src/contracts/interfaces/IBaseCertificateVerifier.sol";
-import "src/contracts/interfaces/IECDSATableCalculator.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
+import "./IBaseCertificateVerifier.sol";
+import "./IECDSATableCalculator.sol";
 
 interface IECDSACertificateVerifierTypes is IECDSATableCalculatorTypes {
     /**
@@ -26,7 +25,7 @@ interface IECDSACertificateVerifierEvents is IECDSACertificateVerifierTypes {
 }
 
 /// @notice An interface for verifying ECDSA certificates
-/// @notice This implements a base interface that all curve certificate verifiers (eg. BN254, ECDSA) must implement
+/// @notice This implements the base `IBaseCertificateVerifier` interface
 interface IECDSACertificateVerifier is IECDSACertificateVerifierEvents, IBaseCertificateVerifier {
     /**
      * @notice updates the operator table

src/contracts/interfaces/IECDSATableCalculator.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
 
 interface IECDSATableCalculatorTypes {
     /**

src/contracts/interfaces/IOperatorTableUpdater.sol

@@ -1,13 +1,13 @@
 // SPDX-License-Identifier: BUSL-1.1
 pragma solidity ^0.8.27;
 
-import "src/contracts/libraries/OperatorSetLib.sol";
+import {OperatorSet} from "../libraries/OperatorSetLib.sol";
 
-import "src/contracts/interfaces/IECDSATableCalculator.sol";
-import "src/contracts/interfaces/IBN254TableCalculator.sol";
-import "src/contracts/interfaces/IECDSACertificateVerifier.sol";
-import "src/contracts/interfaces/IBN254CertificateVerifier.sol";
-import "src/contracts/interfaces/ICrossChainRegistry.sol";
+import "./IECDSATableCalculator.sol";
+import "./IBN254TableCalculator.sol";
+import "./IECDSACertificateVerifier.sol";
+import "./IBN254CertificateVerifier.sol";
+import "./ICrossChainRegistry.sol";
 
 interface IOperatorTableUpdaterErrors {
     /// @notice Thrown when the GlobalTableRoot update fails