feat: Add support for .NET/Unity SDK Crash detection

[mujacica]

• Added support for .NET/Unity SDK Crash detection
• Matching all Sentry.** modules
• Extended current integration tests
• Added new .NET/Unity integration tests

---

Note

Adds .NET/Unity SDK crash detection with new configuration options, fixtures, and tests.

• SDK Crash Detection:
  • Add SdkName.Dotnet and build .NET/Unity crash-detection config (min SDK versions, system library patterns, SDK frame matching, report_fatal_errors=True).
  • Register options: issues.sdk_crash_detection.dotnet.project_id, .organization_allowlist, .sample_rate.
• Tests:
  • Extend config tests to include .dotnet and adjust expectations.
  • Add .NET/Unity crash-detection tests validating frame stripping and detection logic.
• Fixtures:
  • Add .NET/Unity crash event generators used by tests.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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##           master   #100091      +/-   ##
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- Coverage   81.14%    81.14%   -0.01%     
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  Files        8602      8602              
  Lines      381265    381275      +10     
  Branches    23924     23924              
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+ Hits       309382    309387       +5     
- Misses      71521     71526       +5     
  Partials      362       362              

[philipphofmann]

Almost, LGTM.

After we merge this, we still must create a dedicated project in Sentry for the .NET crashes similar to Cocoa https://sentry.sentry.io/issues/?project=4505469596663808&statsPeriod=14d.

Then we should enable it only for the sentry-sdk org and test if it actually works with an intentional SDK crash that the .NET SDK sends to https://sentry-sdks.sentry.io/issues/?project=5428537&statsPeriod=14d

After that, we can hand-pick a few organizations for an alpha run.

[philipphofmann]

LGTM

[sentry-io]

Issues attributed to commits in this pull request

This pull request was merged and Sentry observed the following issues:

• ‼️ ThreadLeakAssertionError: <Thread(Thread-13 (run),... in fork