feat: Add support for remaining Codespaces APIs

[Not-Dhananjay-Mishra]

Relates: #2362
This PR adds support for remaining endpoint of Codespaces

• GET /repos/{owner}/{repo}/codespaces/devcontainers
• GET /repos/{owner}/{repo}/codespaces/new
• GET /repos/{owner}/{repo}/codespaces/permissions_check
• POST /repos/{owner}/{repo}/pulls/{pull_number}/codespaces
• POST /user/codespaces
• GET /user/codespaces/{codespace_name}
• PATCH /user/codespaces/{codespace_name}
• POST /user/codespaces/{codespace_name}/exports
• GET /user/codespaces/{codespace_name}/exports/{export_id}
• POST /user/codespaces/{codespace_name}/publish

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.54%. Comparing base (8ca48dd) to head (5859f8c).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3886      +/-   ##
==========================================
+ Coverage   92.48%   92.54%   +0.05%     
==========================================
  Files         200      200              
  Lines       14564    14679     +115     
==========================================
+ Hits        13469    13584     +115     
  Misses        895      895              
  Partials      200      200              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[gmlewis]

Thank you, @Not-Dhananjay-Mishra!

[Not-Dhananjay-Mishra]

@gmlewis, Thanks for the suggestions! Fixed 👍

[gmlewis]

Thank you, @Not-Dhananjay-Mishra!
One minor tweak, please, then I think we should be ready for a second LGTM+Approval from any other contributor to this repo before merging.

cc: @stevehipwell - @alexandear - @zyfy29

[alexandear]

Left some suggestions. Feel free to ask questions.

[alexandear]

Suggested change

	func (s *CodespacesService) Update(ctx context.Context, codespaceName string, opt *UpdateCodespaceOptions) (*Codespace, *Response, error) {
	func (s *CodespacesService) UpdateCodespace(ctx context.Context, codespaceName string, opts *UpdateCodespaceOptions) (*Codespace, *Response, error) {

[Not-Dhananjay-Mishra]

I see many method in codespace.go where method name are like Delete, Stop, Start and List. So can't we use Update only here?