feat: Proposal for flushing logs

[philipphofmann]

Proposal for chaning flush for logs #5834.

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

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

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- Proposal for flushing logs ([#5883](https://github.com/getsentry/sentry-cocoa/pull/5883))

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Generated by 🚫 dangerJS against 39aceaa

[codecov]

Codecov Report

❌ Patch coverage is 0% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 8.359%. Comparing base (1752593) to head (39aceaa).
⚠️ Report is 18 commits behind head on enha/flush-logs-on-sdk-flush-and-close.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
Sources/Swift/Tools/SentryLogBatcher.swift	0.000%	13 Missing ⚠️
Sources/Swift/Helper/SentrySDK.swift	0.000%	5 Missing ⚠️
Sources/Swift/Tools/SentryLogger.swift	0.000%	4 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (1752593) and HEAD (39aceaa). Click for more details.

HEAD has 3 uploads less than BASE

Flag	BASE (1752593)	HEAD (39aceaa)
	4	1

Additional details and impacted files

@@                             Coverage Diff                              @@
##           enha/flush-logs-on-sdk-flush-and-close    #5883        +/-   ##
============================================================================
- Coverage                                  86.695%   8.359%   -78.336%     
============================================================================
  Files                                         423      391        -32     
  Lines                                       36536    34823      -1713     
  Branches                                    17282    13792      -3490     
============================================================================
- Hits                                        31675     2911     -28764     
- Misses                                       4816    31902     +27086     
+ Partials                                       45       10        -35     

Files with missing lines	Coverage Δ
Sources/Swift/Tools/SentryLogger.swift	0.000% <0.000%> (-99.416%)	⬇️
Sources/Swift/Helper/SentrySDK.swift	1.923% <0.000%> (-85.427%)	⬇️
Sources/Swift/Tools/SentryLogBatcher.swift	0.000% <0.000%> (-98.980%)	⬇️

... and 405 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1246.59 ms	1275.04 ms	28.45 ms
Size	23.75 KiB	920.02 KiB	896.27 KiB

Baseline results on branch: enha/flush-logs-on-sdk-flush-and-close

Startup times

Revision	Plain	With Sentry	Diff
f58e80d	1222.61 ms	1252.23 ms	29.62 ms

App size

Revision	Plain	With Sentry	Diff
f58e80d	23.75 KiB	920.20 KiB	896.46 KiB

[philipphofmann]

@denrase already included the feedback in #5834, so we can close this.