Move live debugger code to proper package

Author: watson

packages/live-debugger/README.md

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+# Live Debugger Browser Monitoring
+
+Datadog Live Debugger enables you to capture function execution snapshots, evaluate conditions, and collect runtime data from your application without modifying source code.
+
+## Usage
+
+To start using the live debugger, add [`@datadog/browser-live-debugger`](https://www.npmjs.com/package/@datadog/browser-live-debugger) to your `package.json` file, then initialize it with:
+
+```javascript
+import { datadogLiveDebugger } from '@datadog/browser-live-debugger'
+
+datadogLiveDebugger.init({
+  clientToken: '<DATADOG_CLIENT_TOKEN>',
+  site: '<DATADOG_SITE>',
+  service: 'my-web-application',
+  env: 'production',
+  version: '1.0.0',
+})
+
+// Add probes programmatically
+datadogLiveDebugger.addProbe({
+  id: 'probe-1',
+  version: 0,
+  type: 'LOG_PROBE',
+  where: { typeName: 'MyClass', methodName: 'myMethod' },
+  template: 'Method executed with duration: {@duration}ms',
+  segments: [
+    { str: 'Method executed with duration: ' },
+    { dsl: '@duration', json: { ref: '@duration' } },
+    { str: 'ms' },
+  ],
+  captureSnapshot: true,
+  capture: { maxReferenceDepth: 3 },
+  sampling: { snapshotsPerSecond: 5000 },
+  evaluateAt: 'EXIT',
+})
+```
+
+**Note**: Dynamic probe management from remote configuration will be added in a future release.
+
+## Integration with RUM
+
+The Live Debugger integrates seamlessly with Datadog RUM to provide enhanced context and correlation:
+
+```javascript
+import { datadogRum } from '@datadog/browser-rum'
+import { datadogLiveDebugger } from '@datadog/browser-live-debugger'
+
+// Initialize RUM first
+datadogRum.init({
+  applicationId: '<DATADOG_APPLICATION_ID>',
+  clientToken: '<DATADOG_CLIENT_TOKEN>',
+  site: '<DATADOG_SITE>',
+  service: 'my-web-application',
+  env: 'production',
+})
+
+// Then initialize Live Debugger
+datadogLiveDebugger.init({
+  clientToken: '<DATADOG_CLIENT_TOKEN>',
+  site: '<DATADOG_SITE>',
+  service: 'my-web-application',
+  env: 'production',
+})
+
+// Add your probe configurations
+// datadogLiveDebugger.addProbe({ ... })
+```
+
+When both are initialized, debugger snapshots will automatically include RUM context (session, view, user action).
+
+## Features
+
+- **Dynamic Instrumentation**: Capture function entry/exit without code changes
+- **Conditional Breakpoints**: Evaluate conditions before capturing snapshots
+- **Template Expressions**: Evaluate custom messages with runtime context
+- **Rate Limiting**: Built-in sampling to prevent performance impact
+- **Stack Traces**: Automatic stack trace capture for debugging
+- **Variable Capture**: Deep capture of arguments, locals, and return values
+
+<!-- Note: all URLs should be absolute -->
+
+[1]: https://docs.datadoghq.com/dynamic_instrumentation/

packages/live-debugger/package.json

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+{
+  "name": "@datadog/browser-live-debugger",
+  "version": "6.24.1",
+  "license": "Apache-2.0",
+  "main": "cjs/entries/main.js",
+  "module": "esm/entries/main.js",
+  "types": "cjs/entries/main.d.ts",
+  "scripts": {
+    "build": "node ../../scripts/build/build-package.ts --modules --bundle datadog-live-debugger.js",
+    "build:bundle": "node ../../scripts/build/build-package.ts --bundle datadog-live-debugger.js"
+  },
+  "dependencies": {
+    "@datadog/browser-core": "6.24.1"
+  },
+  "peerDependencies": {
+    "@datadog/browser-rum": "6.24.1"
+  },
+  "peerDependenciesMeta": {
+    "@datadog/browser-rum": {
+      "optional": true
+    }
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/DataDog/browser-sdk.git",
+    "directory": "packages/live-debugger"
+  },
+  "volta": {
+    "extends": "../../package.json"
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}