Disable SDK metrics, and send connector metrics to Posthog instead of mixpanel

[JR-Morgan]

No description provided.

[linear-code]

ENG-8731

[netlify]

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[codecov]

Codecov Report

❌ Patch coverage is 92.77730% with 84 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.11%. Comparing base (77c5688) to head (12a0fbd).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/specklepy/api/resource.py	74.28%	18 Missing ⚠️
src/specklepy/api/credentials.py	84.14%	13 Missing ⚠️
src/specklepy/api/wrapper.py	92.96%	9 Missing ⚠️
...lepy/api/resources/current/active_user_resource.py	84.31%	8 Missing ⚠️
...specklepy/api/resources/current/server_resource.py	63.63%	8 Missing ⚠️
src/specklepy/api/models/current.py	92.00%	6 Missing ⚠️
src/specklepy/api/host_applications.py	94.28%	4 Missing ⚠️
src/specklepy/logging/metrics.py	77.77%	4 Missing ⚠️
src/specklepy/api/client.py	94.91%	3 Missing ⚠️
src/specklepy/api/operations.py	89.65%	3 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #503      +/-   ##
==========================================
- Coverage   89.41%   89.11%   -0.31%     
==========================================
  Files         173      155      -18     
  Lines        8492     8063     -429     
==========================================
- Hits         7593     7185     -408     
+ Misses        899      878      -21     

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