feat(metrics): Change adding set to string

[philipphofmann]

The MetricsAPI for adding a set should accept a string, which gets converted to a CRC32 hash instead of an integer.

This PR is based on #3791.

#skip-changelog

[github-actions]

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

Generated by 🚫 dangerJS against a34ff72

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.526%. Comparing base (6cec1cb) to head (4ad6c65).

Additional details and impacted files

@@                Coverage Diff                 @@
##           feat/metrics     #3792       +/-   ##
==================================================
+ Coverage        89.349%   89.526%   +0.176%     
==================================================
  Files               559       559               
  Lines             60598     60493      -105     
  Branches          21782     21727       -55     
==================================================
+ Hits              54144     54157       +13     
+ Misses             5464      5298      -166     
- Partials            990      1038       +48     

Files	Coverage Δ
Sources/Sentry/SentryNSDataUtils.m	95.652% <100.000%> (+0.414%)	⬆️
...urces/Swift/Metrics/BucketsMetricsAggregator.swift	100.000% <100.000%> (ø)
Sources/Swift/Metrics/SentryMetricsAPI.swift	100.000% <100.000%> (ø)
Sources/Swift/Metrics/SetMetric.swift	100.000% <100.000%> (ø)
...entryTests/Categories/SentryNSDataUtilsTests.swift	100.000% <100.000%> (ø)
...tryTests/Swift/Metrics/SentryMetricsAPITests.swift	100.000% <100.000%> (ø)
...sts/SentryTests/Swift/Metrics/SetMetricTests.swift	100.000% <100.000%> (ø)

... and 71 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1237.43 ms	1249.94 ms	12.51 ms
Size	21.58 KiB	571.85 KiB	550.26 KiB

Baseline results on branch: feat/metrics

Startup times

Revision	Plain	With Sentry	Diff
3303cb5	1230.40 ms	1235.86 ms	5.46 ms

App size

Revision	Plain	With Sentry	Diff
3303cb5	21.58 KiB	571.42 KiB	549.84 KiB

Previous results on branch: feat/strings-for-metric-set

Startup times

Revision	Plain	With Sentry	Diff
d188928	1229.20 ms	1242.69 ms	13.49 ms
2ceec0f	1234.35 ms	1247.24 ms	12.90 ms

App size

Revision	Plain	With Sentry	Diff
d188928	21.58 KiB	571.49 KiB	549.91 KiB
2ceec0f	21.58 KiB	571.49 KiB	549.91 KiB