[functions] Repository setup #142
Description
Set up the Dart Firebase Functions SDK repository with proper infrastructure including:
- Continuous Integration / Continuous Development (CI/CD) pipelines
- GitHub Actions workflows
- Scripting and automation tools
- Code quality tooling (linting, formatting)
This establishes the foundational infrastructure for the Functions SDK development.
Dependencies: None
Acceptance Criteria:
- Repository created and configured
- CI/CD pipelines configured and working
- GitHub Actions workflows set up
- Linting and formatting tools configured
- README.md with setup instructions added