Cloud: add auth logs to the output channel

[jr]

Important

Add logging to Cloud service using createOutputChannelLogger and createDualLogger to log to both console and VSCode output channel.

• Logging:
  • Add log function to AuthService and CloudService for logging, defaulting to console.log.
  • Use createOutputChannelLogger and createDualLogger in outputChannelLogger.ts to log to both console and VSCode output channel.
• Initialization:
  • Pass log function to AuthService.createInstance() and CloudService.createInstance() in extension.ts.
• Testing:
  • Add tests for createOutputChannelLogger and createDualLogger in outputChannelLogger.test.ts.
  • Update CloudService.test.ts to check AuthService.createInstance is called with a logging function.

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[mrubens]

Looks good once tests pass