chore: move packages into packages and use melos

[buenaflor]

#skip-changelog

[github-actions]

🚨 Detected changes in high risk code 🚨

High-risk code has higher potential to break the SDK and may be hard to test. To prevent severe bugs, apply the rollout process for releasing such changes and be extra careful when changing and reviewing these files:

• packages/flutter/android/src/main/kotlin/io/sentry/flutter/SentryFlutterPlugin.kt
• packages/flutter/lib/src/integrations/native_app_start_integration.dart
• packages/flutter/lib/src/native/java/android_replay_recorder.dart
• packages/flutter/lib/src/screenshot/recorder.dart
• packages/flutter/lib/src/screenshot/widget_filter.dart

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.78%. Comparing base (e99a798) to head (dce1394).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3145      +/-   ##
==========================================
+ Coverage   87.65%   87.78%   +0.13%     
==========================================
  Files         283      291       +8     
  Lines        9370     9884     +514     
==========================================
+ Hits         8213     8677     +464     
- Misses       1157     1207      +50     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	445.49 ms	514.62 ms	69.13 ms
Size	6.54 MiB	7.70 MiB	1.17 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
eca355d	485.50 ms	569.85 ms	84.35 ms
6f47800	451.04 ms	509.64 ms	58.60 ms
2cf9161	454.12 ms	512.67 ms	58.55 ms
cc4e375	426.15 ms	482.34 ms	56.19 ms
793f4dc	462.68 ms	544.21 ms	81.53 ms
b6c8720	457.41 ms	519.04 ms	61.63 ms
3615e19	468.38 ms	504.71 ms	36.33 ms
575ebaa	478.00 ms	585.76 ms	107.76 ms
2d34233	470.54 ms	558.90 ms	88.36 ms
9b99523	456.91 ms	490.55 ms	33.64 ms

App size

Revision	Plain	With Sentry	Diff
eca355d	6.54 MiB	7.70 MiB	1.16 MiB
6f47800	6.54 MiB	7.69 MiB	1.15 MiB
2cf9161	6.54 MiB	7.70 MiB	1.16 MiB
cc4e375	6.54 MiB	7.69 MiB	1.15 MiB
793f4dc	6.54 MiB	7.69 MiB	1.15 MiB
b6c8720	6.54 MiB	7.69 MiB	1.15 MiB
3615e19	6.54 MiB	7.70 MiB	1.16 MiB
575ebaa	6.54 MiB	7.69 MiB	1.15 MiB
2d34233	6.54 MiB	7.55 MiB	1.01 MiB
9b99523	6.54 MiB	7.69 MiB	1.15 MiB

Previous results on branch: umbrella/melos

Startup times

Revision	Plain	With Sentry	Diff
9d5b607	632.34 ms	686.11 ms	53.77 ms
c51192f	462.96 ms	582.06 ms	119.10 ms

App size

Revision	Plain	With Sentry	Diff
9d5b607	6.54 MiB	7.70 MiB	1.16 MiB
c51192f	6.54 MiB	7.70 MiB	1.16 MiB

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1250.13 ms	1260.00 ms	9.87 ms
Size	7.86 MiB	9.44 MiB	1.58 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
dbd526b	1244.78 ms	1259.02 ms	14.24 ms
640ad0c	1241.04 ms	1253.96 ms	12.92 ms
7cfbbd6	1270.63 ms	1285.36 ms	14.72 ms
0fb45d0	1273.24 ms	1286.44 ms	13.19 ms
6ba4675	1223.12 ms	1238.17 ms	15.04 ms
575ebaa	1262.20 ms	1274.24 ms	12.04 ms
f761369	1261.69 ms	1277.82 ms	16.12 ms
2cf9161	1248.33 ms	1266.55 ms	18.22 ms
73dca78	1246.65 ms	1265.42 ms	18.76 ms
4481076	1256.48 ms	1266.64 ms	10.17 ms

App size

Revision	Plain	With Sentry	Diff
dbd526b	7.86 MiB	9.44 MiB	1.58 MiB
640ad0c	7.86 MiB	9.44 MiB	1.58 MiB
7cfbbd6	7.86 MiB	9.44 MiB	1.58 MiB
0fb45d0	7.86 MiB	9.44 MiB	1.58 MiB
6ba4675	7.86 MiB	9.44 MiB	1.58 MiB
575ebaa	7.86 MiB	9.44 MiB	1.58 MiB
f761369	7.86 MiB	9.44 MiB	1.58 MiB
2cf9161	7.86 MiB	9.44 MiB	1.58 MiB
73dca78	7.86 MiB	9.44 MiB	1.58 MiB
4481076	7.86 MiB	9.44 MiB	1.58 MiB

Previous results on branch: umbrella/melos

Startup times

Revision	Plain	With Sentry	Diff
9d5b607	1274.69 ms	1285.39 ms	10.69 ms
c51192f	1238.15 ms	1242.69 ms	4.55 ms

App size

Revision	Plain	With Sentry	Diff
9d5b607	7.86 MiB	9.44 MiB	1.58 MiB
c51192f	7.86 MiB	9.44 MiB	1.58 MiB