feat: add source query param to validate v2 endpoint

[spalmurray-codecov]

Purpose/Motivation

We currently have no visibility into how much our vscode extension is being used outside of install counts. This PR, paired with the corresponding change to our vscode extension, will allow us to see how frequently the validate YAML endpoint is being hit from the extension.

Part of #441

What does this PR do?

• Add a 'source' query param to the validate v2 endpoint

[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

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[codecov-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.12%. Comparing base (f255726) to head (e0b4be5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #472   +/-   ##
=======================================
  Coverage   96.12%   96.12%           
=======================================
  Files         652      652           
  Lines       17294    17297    +3     
=======================================
+ Hits        16624    16627    +3     
  Misses        670      670           

Flag	Coverage Δ
unit	96.12% <100.00%> (+<0.01%)	⬆️
unit-latest-uploader	96.12% <100.00%> (+<0.01%)	⬆️

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[codecov-public-qa]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.12%. Comparing base (f255726) to head (e0b4be5).

@@           Coverage Diff           @@
##             main     #472   +/-   ##
=======================================
  Coverage   96.12%   96.12%           
=======================================
  Files         652      652           
  Lines       17294    17297    +3     
=======================================
+ Hits        16624    16627    +3     
  Misses        670      670           

Flag	Coverage Δ
unit	96.12% <100.00%> (+<0.01%)	⬆️
unit-latest-uploader	96.12% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
validate/views.py	100.00% <100.00%> (ø)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.78%. Comparing base (b8eb29a) to head (2f48fee).

❗ Current head 2f48fee differs from pull request most recent head ce4e07d. Consider uploading reports for the commit ce4e07d to get more accurate results

Changes have been made to critical files, which contain lines commonly executed in production. Learn more

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #472   +/-   ##
=====================================
  Coverage   95.78   95.78           
=====================================
  Files        766     766           
  Lines      17752   17752           
=====================================
  Hits       17002   17002           
  Misses       750     750           

Flag	Coverage Δ
unit	96.05% <100.00%> (ø)
unit-latest-uploader	96.05% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
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