Add enable_logs, before_send_log as top-level options

[sentrivana]

Promote enable_logs and before_send_log to regular (non-experimental) SDK options. Keep supporting the experimental versions too, for backwards compat.

Closes #4641

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.79%. Comparing base (c1861a3) to head (b6f746c).
⚠️ Report is 2 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/utils.py	44.44%	3 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4644      +/-   ##
==========================================
+ Coverage   80.75%   80.79%   +0.03%     
==========================================
  Files         156      156              
  Lines       16635    16643       +8     
  Branches     2831     2833       +2     
==========================================
+ Hits        13434    13446      +12     
+ Misses       2311     2306       -5     
- Partials      890      891       +1     

Files with missing lines	Coverage Δ
sentry_sdk/client.py	78.76% <100.00%> (-0.05%)	⬇️
sentry_sdk/consts.py	94.73% <ø> (ø)
sentry_sdk/integrations/logging.py	83.97% <100.00%> (ø)
sentry_sdk/integrations/loguru.py	80.85% <100.00%> (+0.20%)	⬆️
sentry_sdk/utils.py	86.67% <44.44%> (-0.35%)	⬇️

... and 3 files with indirect coverage changes

[sentrivana]

This is here because mypy was complaining about log not being Optional on line 962 (in the new diff) and the get_before_send_log function potentially returning None 🙄