feat(cli): integrate Nx with CLI application

- Add project.json with build, serve, test, and lint targets
- Support both OSS and Bit configurations via Nx configurations
- Maintain backward compatibility with existing npm build scripts
- Update webpack configs to work with both Nx and direct webpack CLI calls
- Enable nx build cli --configuration=[oss|oss-dev|bit|bit-dev] commands
- Enable nx serve cli for development workflow with watch mode
- Preserve all existing npm run build:* commands for compatibility

package.json

@@ -170,6 +170,7 @@
     "@nx/eslint": "21.3.11",
     "@nx/jest": "21.3.11",
     "@nx/js": "21.3.11",
+    "@nx/webpack": "21.3.11",
     "big-integer": "1.6.52",
     "braintree-web-drop-in": "1.44.0",
     "buffer": "6.0.3",