Initial commit: CloudFormation Custom Resource Lambda for repository …

…creation

- Migrated from Service Catalog EventBridge to CloudFormation Custom Resources
- Lambda creates GitHub/GitLab repositories from templates
- Supports dynamic parameter handling for any CloudFormation properties
- Includes Packer pipeline for container image builds
- Terraform deployment configuration in deploy/ directory
- Complete CloudFormation template for Service Catalog integration
- Documentation for deployment and usage

.gitignore

@@ -0,0 +1,4 @@
+# Packer pipeline zip files
+template-automation-lambda-builder.zip
+# Packer pipeline zip files
+service-catalog-repo-generator-builder.zip