Fix ECS scaling issues and improve event-driven architecture

This commit includes the following changes:

1. Fixed ECS scaling by directly updating service desired count

2. Added event-driven architecture for queue monitoring

3. Implemented MessageAddedToQueue and MessageRemovedFromQueue events

4. Updated Lambda functions to handle scaling events

5. Added periodic scaling check via EventBridge scheduler

6. Added .gitignore to exclude unnecessary files

Author: moelasmar

Diff for: .gitignore

@@ -1 +1,80 @@
-lambda/venv/
+# CDK-specific files
+cdk.out/
+cdk.context.json
+.cdk-staging/
+.cdk.staging/
+cdk-outputs.json
+
+# Node.js dependencies
+node_modules/
+npm-debug.log
+yarn-debug.log
+yarn-error.log
+package-lock.json
+yarn.lock
+
+# Python virtual environments
+venv/
+env/
+.env/
+.venv/
+ENV/
+__pycache__/
+*.py[cod]
+*$py.class
+.Python
+*.so
+.pytest_cache/
+.coverage
+htmlcov/
+.tox/
+.nox/
+.hypothesis/
+.egg-info/
+.installed.cfg
+*.egg
+
+# IDE files
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+.project
+.classpath
+.settings/
+*.sublime-workspace
+*.sublime-project
+
+# AWS SAM
+.aws-sam/
+samconfig.toml
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Local development
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# TypeScript
+*.js.map
+*.d.ts
+tsconfig.tsbuildinfo
+
+# Build outputs
+dist/
+build/
+out/
+.next/
+
+# Temporary files
+tmp/
+temp/
+.tmp/