Add appHangTimeoutInterval to SentryFlutterOptions

[denrase]

📜 Description

• Add appHangTimeoutInterval to SentryFlutterOptions

💡 Motivation and Context

Closes #1550

💚 How did you test it?

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

[github-actions]

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

Generated by 🚫 dangerJS against 2793a8b

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.82% 🎉

Comparison is base (0aaa46e) 90.29% compared to head (2793a8b) 91.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1568      +/-   ##
==========================================
+ Coverage   90.29%   91.11%   +0.82%     
==========================================
  Files         181       61     -120     
  Lines        5830     2049    -3781     
==========================================
- Hits         5264     1867    -3397     
+ Misses        566      182     -384     

Files Changed	Coverage Δ
flutter/lib/src/sentry_flutter_options.dart	100.00% <ø> (ø)
...r/lib/src/integrations/native_sdk_integration.dart	100.00% <100.00%> (ø)

... and 120 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
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[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	305.94 ms	377.38 ms	71.44 ms
Size	6.16 MiB	7.14 MiB	1007.47 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
0a82a1e	321.02 ms	393.82 ms	72.80 ms
322aa66	284.98 ms	341.76 ms	56.78 ms
9c5aec6	287.33 ms	320.94 ms	33.61 ms
f4cc744	349.53 ms	394.68 ms	45.15 ms
b47809a	333.42 ms	368.36 ms	34.95 ms
f2db4ec	372.46 ms	469.72 ms	97.26 ms
f96ca24	316.08 ms	388.22 ms	72.14 ms
f79eecf	341.35 ms	388.98 ms	47.63 ms
0be962b	325.54 ms	382.83 ms	57.29 ms
ecb4003	332.58 ms	385.15 ms	52.57 ms

App size

Revision	Plain	With Sentry	Diff
0a82a1e	6.15 MiB	7.11 MiB	981.82 KiB
322aa66	5.94 MiB	6.92 MiB	1005.75 KiB
9c5aec6	5.94 MiB	6.92 MiB	1001.61 KiB
f4cc744	5.94 MiB	6.95 MiB	1.01 MiB
b47809a	5.94 MiB	6.96 MiB	1.02 MiB
f2db4ec	6.06 MiB	7.03 MiB	990.27 KiB
f96ca24	6.06 MiB	7.10 MiB	1.04 MiB
f79eecf	6.15 MiB	7.13 MiB	1000.07 KiB
0be962b	6.06 MiB	7.03 MiB	990.29 KiB
ecb4003	6.06 MiB	7.09 MiB	1.03 MiB