feat(profiling): new start and stop API

[armcknight]

stub the new start and stop methods we'll offer for continuous profiling. there are some TODOs for checks that come in later PR branches as those API are implemented and become available.

#skip-changelog; for #4853

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 48bb10b

[codecov]

Codecov Report

Attention: Patch coverage is 96.72897% with 7 lines in your changes missing coverage. Please review.

Project coverage is 92.506%. Comparing base (c964075) to head (48bb10b).
Report is 12 commits behind head on armcknight/git-chain/profiling/new-continuous-apis/0-topic-branch.

Files with missing lines	Patch %	Lines
Tests/SentryTests/SentrySDKTests.swift	97.474%	5 Missing ⚠️
Sources/Sentry/SentrySDK.m	87.500%	2 Missing ⚠️

Additional details and impacted files

@@                                           Coverage Diff                                           @@
##           armcknight/git-chain/profiling/new-continuous-apis/0-topic-branch     #4855       +/-   ##
=======================================================================================================
+ Coverage                                                             92.470%   92.506%   +0.036%     
=======================================================================================================
  Files                                                                    666       666               
  Lines                                                                  78926     78993       +67     
  Branches                                                               28572     28599       +27     
=======================================================================================================
+ Hits                                                                   72983     73074       +91     
+ Misses                                                                  5845      5820       -25     
- Partials                                                                  98        99        +1     

Files with missing lines	Coverage Δ
Sources/Sentry/SentrySDK.m	90.625% <87.500%> (+1.339%)	⬆️
Tests/SentryTests/SentrySDKTests.swift	97.161% <97.474%> (+0.170%)	⬆️

... and 11 files with indirect coverage changes

---

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1202.57 ms	1236.37 ms	33.79 ms
Size	22.30 KiB	823.67 KiB	801.37 KiB

Baseline results on branch: armcknight/git-chain/profiling/new-continuous-apis/0-topic-branch

Startup times

Revision	Plain	With Sentry	Diff
b81c36b	1229.65 ms	1252.16 ms	22.51 ms

App size

Revision	Plain	With Sentry	Diff
b81c36b	22.30 KiB	823.44 KiB	801.13 KiB

Previous results on branch: armcknight/profiling/new-continuous-apis/2-new-start-stop-api

Startup times

Revision	Plain	With Sentry	Diff
c760c84	1221.76 ms	1243.46 ms	21.70 ms
6f57ac5	1230.02 ms	1244.73 ms	14.71 ms
6b4657c	1215.92 ms	1236.57 ms	20.65 ms
96e7192	1206.88 ms	1235.85 ms	28.97 ms
468d437	1228.67 ms	1250.08 ms	21.41 ms

App size

Revision	Plain	With Sentry	Diff
c760c84	22.30 KiB	823.68 KiB	801.38 KiB
6f57ac5	22.32 KiB	819.64 KiB	797.32 KiB
6b4657c	22.32 KiB	819.64 KiB	797.32 KiB
96e7192	22.30 KiB	822.04 KiB	799.74 KiB
468d437	22.30 KiB	822.04 KiB	799.73 KiB

[philipphofmann]

As this doesn't get merged to main, the TODOs are OK, LGTM