Add stale bot

[juancarlospaco]

What kind of change does this PR introduce?

• Add stale bot to mark issues and PRs as Stale after a long period of inactivity.
• Currently, it does NOT close issues automatically, but it can do so if wanted.
• Same yaml as Add stale bot supabase-py#774

Additional context

• https://github.com/actions/stale

[sourcery-ai]

Hey @juancarlospaco - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good

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[sourcery-ai]

suggestion (code_refinement): Setting 'days-before-pr-close' to -1 may prevent PRs from ever being auto-closed.

Consider setting a positive number of days after which a stale PR should be closed to ensure the repository remains clean.

Suggested change

	days-before-pr-close: -1
	days-before-pr-close: 30

[sourcery-ai]

suggestion (code_refinement): Setting 'days-before-issue-close' to -1 may prevent issues from ever being auto-closed.

It might be beneficial to define a specific timeframe after which stale issues are closed to maintain a manageable issue tracker.

Suggested change

	days-before-issue-close: -1
	days-before-issue-close: 30

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.91%. Comparing base (b858685) to head (02a849c).
Report is 26 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #422      +/-   ##
==========================================
+ Coverage   95.72%   95.91%   +0.18%     
==========================================
  Files          28       28              
  Lines        1639     1715      +76     
==========================================
+ Hits         1569     1645      +76     
  Misses         70       70              

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