(DOCSP-39546): Port SwiftUI content for consolidated docs

[dacharyc]

Pull Request Info - SDK Docs Consolidation

This PR ports the existing SwiftUI content over to the Frameworks section, updates Realm naming, and removes PBS mentions and examples.

Jira ticket: https://jira.mongodb.org/browse/DOCSP-39546

Staging Links

• Object Models - SwiftUI
• Change an Object Model - SwiftUI
• Configure and Open a Database - SwiftUI
• React to Changes - SwiftUI
• Pass Data Between SwiftUI Views
• Write Data - SwiftUI
• Filter Data - SwiftUI
• Handle Sync Errors - SwiftUI
• Sync Data in the Background - SwiftUI
• Use the SDK with SwiftUI Previews

Page Source

Add links to every SDK's pages where you got the SDK-specific information:

• SwiftUI section

PR Author Checklist

Before requesting a review for your PR, please check these items:

• Open the PR against the feature-consolidated-sdk-docs branch instead of master
• Tag the consolidated page for:
  • genre
  • meta.keywords
  • meta.description

Naming

• Update Realm naming and the language around persistence layer/local/device per this document
• Include .rst files comply with the naming guidelines

Links and Refs

• Create new consolidated SDK ref targets starting with "_sdks-" for relevant sections
• Remove or update any SDK-specific refs to use the new consolidated SDK ref targets
• Update any Kotlin API links to use the new Kotlin SDK roles

Content

• Shared code boxes have snippets or placeholders for all 9 languages
• API description sections have API details or a generic placeholder for all 9 languages
• Check related pages for relevant content to include
• Create a ticket for missing examples in each relevant SDK: Consolidation Gaps epic

Reviewer Checklist

As a reviewer, please check these items:

• Shared code example boxes contain language-specific snippets or placeholders for every language
• API reference details contain working API reference links or generic content
• Realm naming/language has been updated
• All relevant content from individual SDK pages is present on the consolidated page

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[github-actions]

Readability for Commit Hash: fab4704

You can see any previous Readability scores (if they exist) by looking
at the comment's history.

Readability scores for changed documents:

• source/sdk/files/configure-and-open: Grade Level: 6.2, Reading Ease: 69.38

For Grade Level, aim for 8 or below.

For Reading Ease scores, aim for 60 or above:

Score	Difficulty
90-100	Very Easy
80-89	Easy
70-79	Fairly Easy
60-69	Medium
50-59	Fairly Hard
30-49	Hard
0-29	Very Hard

For help improving readability, try Hemingway App.

[docs-builder-bot]

✨ Staging URL: https://preview-mongodbmongodb.gatsbyjs.io/realm/feature-consolidated-sdk-docs/

🪵 Logs

• job log: ccb45ee77d45ead6ba1c5e3d977d7e1e190d8b65