22 Add Auth Template to Init Flow and also refactor input

[b-jonathan]

Summary

Describe the purpose of this pull request. What does it do, and why is it needed?

Closes #(22) if applicable.

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Changes Made

• Added new stack: firebase
• Updated existing functionality
• Improved documentation
• Refactored internal code
• Fixed a bug

Briefly summarize the major changes:

• Firebase added as first Auth Template
• FileLock added so that prompts dont get interrupted by logs
• Added new exec functions to account for outputs and interaction

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Testing

How was this change tested?

• Manual testing done with taco CLI
• CI checks pass

Provide details:

# Example test commands
go test ./...
taco init test-app