WIP: iOS integration test

[jpnurmi]

Helps verify that crash events are captured as expected after Cocoa SDK updates (and eventually getsentry/sentry-cocoa#6193):

• CrashType.Managed
• CrashType.Native
• NullReferenceException

For example, see 17997796017 (iOS Device Tests -> Integration Tests).

TODO: Is there a way to eliminate the system crash dialog that appears during integration tests?

#skip-changelog

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.45%. Comparing base (6ea6bf4) to head (4931fcb).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4559      +/-   ##
==========================================
+ Coverage   73.34%   73.45%   +0.10%     
==========================================
  Files         479      480       +1     
  Lines       17509    17589      +80     
  Branches     3445     3469      +24     
==========================================
+ Hits        12842    12920      +78     
+ Misses       3788     3785       -3     
- Partials      879      884       +5     

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[jpnurmi]

@sentry review

[jpnurmi]

cursor review

[jpnurmi]

@vaind wdyt? i hope this does not overlap too much with the future e2e test plans (#4174).