feat!: add more inputs to Macaron Action and improve GitHub Action analysis

[behnazh-w]

Summary

This PR enhances the Macaron GitHub Action by updating its input/output interface and introducing new analysis to detect injection risks and other security issues in GitHub Actions workflows. It also improves result visibility by showing findings directly in the Action run summary.

Description of changes

• Action I/O updates: refactored inputs and outputs for the Macaron GitHub Action to improve usability and consistency
• Security analysis: added detection for injection vulnerabilities and other GitHub Actions security issues
• Result reporting: outputs analysis results as a summary in the Action run for better visibility
• Policy queries: introduced new SQL queries in template policies to simplify extraction of failure-related details
• Bash parsing improvements: updated parser to map GitHub variables to placeholder variables, to be able to reason about expansions in inlined shell scripts.
• CI pipeline update: action tests now run after container build to ensure validation against the correct Macaron version
• Docs & actions updates: updated documentation and related action configurations