Initial repo setup for IP Address Lookup

Add Cloudflare Worker source code, configuration files, GitHub Actions workflow, and documentation for the IP Address Lookup service. Includes geolocation lookup worker, deployment workflow, API documentation, and project metadata.

.gitignore

@@ -0,0 +1,36 @@
+# Dependencies
+node_modules/
+package-lock.json
+yarn.lock
+pnpm-lock.yaml
+
+# Wrangler
+.wrangler/
+.dev.vars
+.mf/
+
+# Build outputs
+dist/
+worker/
+
+# Environment variables
+.env
+.env.local
+.env.production
+
+# Editor directories
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*