Initial commit: JMESPath Testing Tool

- React-based web application for testing JMESPath expressions
- macOS-first containerization with Apple container command
- Bootstrap UI with real-time evaluation
- GitHub Actions CI/CD pipeline
- Docker fallback support
- Comprehensive documentation and development scripts

.containerignore

@@ -0,0 +1,19 @@
+# Ignore files for Apple container command builds
+node_modules
+npm-debug.log
+build
+.git
+.gitignore
+README.md
+DEVELOPMENT.md
+.env
+.nyc_output
+coverage
+.coverage
+**/*.test.js
+**/*.spec.js
+scripts/
+demo.sh
+.dockerignore
+docker-compose.yml
+Dockerfile.dev