chore: add GitHub community health files

[marandaneto]

💡 Motivation and Context

Align this repository with the standard PostHog client library GitHub metadata by adding any missing community health files and ensuring @PostHog/team-client-libraries is included in CODEOWNERS.

💚 How did you test it?

Not run. These are GitHub metadata and template changes only.

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

[greptile-apps]

_{Reviews (1): Last reviewed commit: "chore: add GitHub community health files" | Re-trigger Greptile}

[github-actions]

posthog-python Compliance Report

Date: 2026-04-14 11:21:53 UTC
Duration: 159442ms

✅ All Tests Passed!

29/29 tests passed

---

Capture Tests

✅ 29/29 tests passed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	515ms
Format Validation.Event Has Uuid	✅	1507ms
Format Validation.Event Has Lib Properties	✅	1506ms
Format Validation.Distinct Id Is String	✅	1507ms
Format Validation.Token Is Present	✅	1506ms
Format Validation.Custom Properties Preserved	✅	1506ms
Format Validation.Event Has Timestamp	✅	1506ms
Retry Behavior.Retries On 503	✅	9516ms
Retry Behavior.Does Not Retry On 400	✅	3506ms
Retry Behavior.Does Not Retry On 401	✅	3507ms
Retry Behavior.Respects Retry After Header	✅	9513ms
Retry Behavior.Implements Backoff	✅	23527ms
Retry Behavior.Retries On 500	✅	7500ms
Retry Behavior.Retries On 502	✅	7510ms
Retry Behavior.Retries On 504	✅	7511ms
Retry Behavior.Max Retries Respected	✅	23532ms
Deduplication.Generates Unique Uuids	✅	1496ms
Deduplication.Preserves Uuid On Retry	✅	7514ms
Deduplication.Preserves Uuid And Timestamp On Retry	✅	14519ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	7509ms
Deduplication.No Duplicate Events In Batch	✅	1502ms
Deduplication.Different Events Have Different Uuids	✅	1508ms
Compression.Sends Gzip When Enabled	✅	1507ms
Batch Format.Uses Proper Batch Structure	✅	1506ms
Batch Format.Flush With No Events Sends Nothing	✅	1005ms
Batch Format.Multiple Events Batched Together	✅	1504ms
Error Handling.Does Not Retry On 403	✅	3508ms
Error Handling.Does Not Retry On 413	✅	3507ms
Error Handling.Retries On 408	✅	7513ms