Support for before_send_log option

[solnic]

This adds support for a new configuration option called before_send_log.

Closes #2633

[solnic]

@sl0thentr0py do we need to support hint argument here too? Also, any...hints how to handle recording lost events in case of logs? 🙂

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.12%. Comparing base (73745bb) to head (297ce99).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2634      +/-   ##
==========================================
- Coverage   97.11%   95.12%   -2.00%     
==========================================
  Files         133      133              
  Lines        5095     5125      +30     
==========================================
- Hits         4948     4875      -73     
- Misses        147      250     +103     

Components	Coverage Δ
sentry-ruby	95.49% <100.00%> (-2.21%)	⬇️
sentry-rails	91.91% <ø> (-2.89%)	⬇️
sentry-sidekiq	96.16% <ø> (+1.89%)	⬆️
sentry-resque	94.44% <ø> (ø)
sentry-delayed_job	94.68% <ø> (ø)
sentry-opentelemetry	98.62% <ø> (-1.38%)	⬇️

Files with missing lines	Coverage Δ
sentry-ruby/lib/sentry/client.rb	99.40% <100.00%> (+0.07%)	⬆️
sentry-ruby/lib/sentry/configuration.rb	98.35% <100.00%> (+0.01%)	⬆️
sentry-ruby/lib/sentry/log_event_buffer.rb	100.00% <100.00%> (ø)

... and 23 files with indirect coverage changes

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[sl0thentr0py]

checked python (empty placeholder hint) and JS (no hint)

https://github.com/getsentry/sentry-python/blob/8be519faa2d7df2d1882fa2f57cbca13cc899328/sentry_sdk/client.py#L937-L941
https://github.com/getsentry/sentry-javascript/blob/61940fc22052e9005043f77c7355db1742d1d78c/packages/core/src/logs/exports.ts#L132

let's just go with no hint since I can't see any additional info we can put in there anyway

---

the client report you can use

record_lost_event(:before_send, "log_item")