feat: replace spdy with websocket for portforward and pod exec #21517

[maoqide]

Closes [ISSUE #21517]

As described in related issue, this PR replaced spdy with websocket in argocd.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.
• Optional. My organization is added to USERS.md.
• Optional. For bug fixes, I've indicated what older releases this fix should be cherry-picked into (this may or may not happen depending on risk/complexity).

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 20 lines in your changes missing coverage. Please review.

Project coverage is 53.35%. Comparing base (9b17495) to head (8c4280d).
Report is 45 commits behind head on master.

Files with missing lines	Patch %	Lines
server/application/terminal.go	0.00%	10 Missing ⚠️
util/kube/portforwarder.go	0.00%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21518      +/-   ##
==========================================
- Coverage   55.27%   53.35%   -1.92%     
==========================================
  Files         337      337              
  Lines       56824    56842      +18     
==========================================
- Hits        31407    30326    -1081     
- Misses      22734    23884    +1150     
+ Partials     2683     2632      -51     

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[agaudreault]

Code LGTM. I haven't tested so I wont merge yet. Exec is disabled by default in bunnyshell. If anyone else test it and it works, feel free to click merge!

[nitishfy]

I'll review this PR in a while.

[agaudreault]

Just tested and terminal is still working