VS Code extension for Firefox Profiler

I've started with a working prototype for extension to use embedded Firefox Profiler in VS Code here: https://github.com/nisargjhaveri/vscode-firefox-profiler

The extension would eventually have the following functionalities:
- Opening any file in Firefox Profiler in embedded view.
- "Save as" option for the opened profile, from VS Code's entry points.
- Ability to programatically opening profiler directly for some file without user intervention.
- Listing uploaded profiles using https://profiler.firefox.com/uploaded-recordings/
- Optionally disabling uploads using some preference

Here is a list of issues that are required to make it work, listing here for tracking, will add more if anything else important comes up:

- [x] #5170 - Absolutely required to make it load in VS Code
- [ ] #5223 - Required for basic functionalities like Docs link or lookup in searchbox.
- [x] #5222 - Required to align with basic user expectation in embedded setup
- [ ] #5193 - Nice to have to align better with user expectation in file based environment.

Feel free to share any thoughts around this. Happy to take suggestions and changes as required.

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-828)