SF-3370 Improve lynx processing time when opening large projects

[siltomato]

This PR improves the processing of lynx diagnostics before emitting as rawInsightSource$, particularly adding a debounce to avoid emitting after each event URI (text doc id) when loading a new project.

You can test the loading speed by opening a DBL resource like 'NTV' with lynx enabled in QA vs this branch.

The problems panel still is slow to switch with many insights, but that will be improved in a separate PR.

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This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 91.30435% with 2 lines in your changes missing coverage. Please review.

Project coverage is 81.85%. Comparing base (310bffd) to head (b2209fd).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ate/editor/lynx/insights/lynx-workspace.service.ts	90.90%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3207   +/-   ##
=======================================
  Coverage   81.85%   81.85%           
=======================================
  Files         601      601           
  Lines       34496    34500    +4     
  Branches     5595     5596    +1     
=======================================
+ Hits        28237    28241    +4     
+ Misses       5438     5426   -12     
- Partials      821      833   +12     

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[pmachapman]

This is a huge improvement - thank you!!!

Reviewed 3 of 3 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @siltomato)