Integrate OpenTelemetry tracing in Cody Webview (#6100)

Enhance the chat application by integrating OpenTelemetry for tracing
and context management. This update includes:

- Added OpenTelemetry dependencies for context and tracing.
- Implemented tracing spans in chat interactions, feedback submission in
Webview
- Managed active chat context using OpenTelemetry's context API.
- Introduced a telemetry service for managing tracing configuration.
- Added a new class for exporting trace data in `ChatController` from
the webview

These changes aim to improve observability and debugging capabilities by
providing detailed trace information for chat interactions and
operations

## Test plan
- Run sourcegraph instance locally
- Run `sg start otel `
- Run the debugger for vscode cody locally on this branch
- Perform some chat operations 
- Go to `http://localhost:16686`  to see if Jaegar is running
- Select Cody-Client as the service
- See a trace with the title `chat-interaction ` this is a trace coming
from the webview
<img width="1047" alt="image"
src="https://github.com/user-attachments/assets/2ba1dc6b-5da9-42c5-a4da-b04cf8527287">

Here is a video
https://www.loom.com/share/557b0ea9dffd4561810f8d67879f7dfb
 
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https://docs-legacy.sourcegraph.com/dev/background-information/testing_principles.
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## Changelog

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https://www.notion.so/sourcegraph/Writing-a-changelog-entry-dd997f411d524caabf0d8d38a24a878c
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package.json

@@ -64,6 +64,7 @@
   },
   "dependencies": {
     "@openctx/client": "^0.0.30",
+    "@opentelemetry/sdk-trace-web": "^1.18.1",
     "@sourcegraph/telemetry": "^0.18.0",
     "observable-fns": "^0.6.1",
     "react": "18.2.0",
@@ -78,6 +79,7 @@
   },
   "pnpm": {
     "overrides": {
+      "tslib": "2.1.0",
       "@lexical/react": "https://storage.googleapis.com/sourcegraph-assets/npm/lexical-react-sourcegraph-fork-31065486.tgz"
     },
     "packageExtensions": {