docs: add troubleshooting section

[jsjoeio]

While prepping the 4.5.0 release, I ran into some familiar issues. I decided we should probably document them.

[github-actions]

✨ code-server docs for PR #5313 is ready! It will be updated on every commit.

• Host: https://coder.com/docs/code-server/8ae9d72
• Last deploy status: success
• Commit: 72d36f6
• Workflow status: https://github.com/coder/code-server/actions/runs/2678831779

[codecov]

Codecov Report

Merging #5313 (72d36f6) into main (646f243) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #5313   +/-   ##
=======================================
  Coverage   72.38%   72.38%           
=======================================
  Files          30       30           
  Lines        1673     1673           
  Branches      367      367           
=======================================
  Hits         1211     1211           
  Misses        399      399           
  Partials       63       63           

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[github-actions]

✨ code-server dev build published to npm for PR #5313!

• Last publish status: success
• Commit: 72d36f6

To install in a local project, run:

npm install @coder/code-server-pr@5313

To install globally, run:

npm install -g @coder/code-server-pr@5313