chore: Convert SentryScreenshotIntegration to Swift

[itaybre]

Converts SentryScreenshotIntegration to Swift

While I tried not using SentryDependencyContainer anymore, the C block requires a global variable.

#skip-changelog

Closes #7047

[linear]

COCOA-983 Refactor `SentryScreenshotIntegration.m` with new Swift-style setup

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
4084	1	4083	24

View the full list of 1 ❄️ flaky test(s)

SentryTests.SentryOnDemandReplayTests::testAddFrameIsThreadSafe

Flake rate in main: 100.00% (Passed 0 times, Failed 38 times)

Stack Traces | 0s run time

.../Integrations/SessionReplay/SentryOnDemandReplayTests.swift:139 - Asynchronous wait failed: Exceeded timeout of 10 seconds, with unfulfilled expectations: "AddFrameIsThreadSafe".

To view more test analytics, go to the Test Analytics Dashboard
_{📋 Got 3 mins? Take this short survey to help us improve Test Analytics.}

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1211.37 ms	1255.29 ms	43.91 ms
Size	24.14 KiB	1.03 MiB	1.01 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
7a8b167	1217.49 ms	1247.67 ms	30.18 ms
3cdbc22	1231.63 ms	1251.06 ms	19.43 ms
748df9d	1231.63 ms	1259.47 ms	27.84 ms
3319d58	1226.46 ms	1256.56 ms	30.10 ms
ebc3a34	1236.24 ms	1261.02 ms	24.78 ms
8cf2d43	1217.60 ms	1270.27 ms	52.67 ms
e16fd46	1228.64 ms	1251.57 ms	22.93 ms
e8e40fd	1222.10 ms	1259.91 ms	37.80 ms
b9aacb6	1230.42 ms	1251.00 ms	20.58 ms
c7a1563	1186.80 ms	1232.81 ms	46.02 ms

App size

Revision	Plain	With Sentry	Diff
7a8b167	24.14 KiB	1.01 MiB	1014.00 KiB
3cdbc22	23.75 KiB	928.14 KiB	904.40 KiB
748df9d	23.75 KiB	902.48 KiB	878.74 KiB
3319d58	23.75 KiB	1021.48 KiB	997.73 KiB
ebc3a34	23.75 KiB	919.91 KiB	896.16 KiB
8cf2d43	23.75 KiB	971.98 KiB	948.23 KiB
e16fd46	23.74 KiB	1.01 MiB	1008.95 KiB
e8e40fd	23.75 KiB	1022.79 KiB	999.04 KiB
b9aacb6	23.75 KiB	913.64 KiB	889.89 KiB
c7a1563	24.15 KiB	1.01 MiB	1014.90 KiB

Previous results on branch: itay/cocoa-983-refactor-sentryscreenshotintegrationm-with-new-swift-style

Startup times

Revision	Plain	With Sentry	Diff
5f3bfbb	1215.79 ms	1255.40 ms	39.61 ms
0d3e3b8	1193.39 ms	1218.17 ms	24.78 ms

App size

Revision	Plain	With Sentry	Diff
5f3bfbb	24.14 KiB	1.03 MiB	1.01 MiB
0d3e3b8	24.14 KiB	1.03 MiB	1.01 MiB

[philprime]

LGTM