Deprecate set_measurement() API.

[antonpirker]

Deprecate set_measurement(). This will be replaced by set_data() which internally is using the Otel set_attribute().

Fixes #3074

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.26%. Comparing base (c6db420) to head (fa9e9b7).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3934      +/-   ##
==========================================
- Coverage   80.33%   80.26%   -0.07%     
==========================================
  Files         142      142              
  Lines       15933    15935       +2     
  Branches     2725     2725              
==========================================
- Hits        12800    12791       -9     
- Misses       2261     2268       +7     
- Partials      872      876       +4     

Files with missing lines	Coverage Δ
sentry_sdk/api.py	79.85% <ø> (ø)
sentry_sdk/tracing.py	78.57% <100.00%> (-0.32%)	⬇️

... and 3 files with indirect coverage changes

[antonpirker]

As this is kind of in sleep-mode right now, we keep this PR open but will not merge it right now.

See: https://github.com/getsentry/projects/issues/73

[antonpirker]

Picking this up again, Daniel G said we should deprecated now and remove in 3.0.