chore: Add stdout console log when package fails to build (build-packages.js)

[sevetseh28]

Description

Adds a new console log when build-packages.json fails. I was getting an error that had empty stderr but stdout was non-empty but not being shown. Example:

❌ config-types (build): npm run build failed with code 2
stderr: 
stdout: 
> @continuedev/[email protected] build
> tsc
error TS2688: Cannot find type definition file for 'node'.
  The file is in the program because:
    Entry point of type library 'node' specified in compilerOptions

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

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Tests

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Summary by cubic

Log stdout on package build failures to improve debugging when stderr is empty. build-packages.js now prints both stderr and stdout after a non-zero exit.

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[sevetseh28]

I have read the CLA Document and I hereby sign the CLA