Split up Flutter's `default_integrations.dart` into one file for each integration

[ueman]

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:scroll: Description

Split up default_integrations.dart into one file for each integration. This should make it easier to maintain a good overview about the integrations.

#skip-changelog

:bulb: Motivation and Context

There were a lot of integrations in a single file. That was hard to keep track of.

:green_heart: How did you test it?

Current test cover this.

:pencil: Checklist

• [x] I reviewed submitted code
• [ ] I added tests to verify changes
• [ ] I updated the docs if needed
• [x] All tests passing
• [x] No breaking changes

:crystal_ball: Next steps

[codecov-commenter]

Codecov Report

Base: 89.98% // Head: 89.90% // Decreases project coverage by -0.08% :warning:

Coverage data is based on head (e43c3b9) compared to base (e187bee). Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1037      +/-   ##
==========================================
- Coverage   89.98%   89.90%   -0.09%     
==========================================
  Files         115      106       -9     
  Lines        3585     3388     -197     
==========================================
- Hits         3226     3046     -180     
+ Misses        359      342      -17     

Impacted Files	Coverage Δ
dio/lib/src/sentry_dio_extension.dart
logging/lib/src/extension.dart
dio/lib/src/dio_event_processor.dart
dio/lib/src/breadcrumb_client_adapter.dart
dio/lib/src/tracing_client_adapter.dart
dio/lib/src/sentry_transformer.dart
dio/lib/src/sentry_dio_client_adapter.dart
dio/lib/src/failed_request_interceptor.dart
logging/lib/src/logging_integration.dart

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[marandaneto]

I will wait for https://github.com/getsentry/sentry-dart/pull/1039 before reviewing since it touches the same file and likely having conflicts.

[marandaneto]

@ueman

Formatted 69 files (1 changed) in 1.09 seconds.

This is unblocked now, fixing the linter and we are good to go, thanks for doing this.

[ueman]

@ueman

Formatted 69 files (1 changed) in 1.09 seconds.

This is unblocked now, fixing the linter and we are good to go, thanks for doing this.

Yeah, I also want to double check whether I messed up one of the merges, especially after the PlatformDispatcher PR

[ueman]

This is now ready. Pana fails because it runs against the current published version :/

[marandaneto]

Thanks @ueman