ci: iOS-Swift via xcodegen

[armcknight]

following on #5106, demonstrate building iOS-Swift with XcodeGen, including with iOS-SwiftClip, iOS-Swift-UITests (renamed from iOS-SwiftUITests for clarity) and iOS-Benchmarking (renamed from PerformanceBenchmarks) included.

#skip-changelog; for #5165

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1230.58 ms	1252.82 ms	22.23 ms
Size	22.31 KiB	861.21 KiB	838.90 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
e072ad1	1232.43 ms	1245.51 ms	13.08 ms
ef284b2	1211.76 ms	1229.69 ms	17.93 ms
649d940	1223.46 ms	1238.70 ms	15.24 ms
e680b99	1214.36 ms	1243.31 ms	28.95 ms
1bf8571	1215.31 ms	1232.48 ms	17.17 ms
9fa5d27	1230.65 ms	1255.08 ms	24.43 ms
9cc7e7c	1228.90 ms	1237.96 ms	9.06 ms
94e1968	1238.85 ms	1252.02 ms	13.17 ms
077e940	1227.31 ms	1246.51 ms	19.20 ms
7a7de19	1251.30 ms	1266.94 ms	15.64 ms

App size

Revision	Plain	With Sentry	Diff
e072ad1	21.58 KiB	625.83 KiB	604.24 KiB
ef284b2	20.76 KiB	401.36 KiB	380.60 KiB
649d940	21.58 KiB	695.36 KiB	673.78 KiB
e680b99	22.30 KiB	730.72 KiB	708.42 KiB
1bf8571	20.76 KiB	437.12 KiB	416.36 KiB
9fa5d27	20.76 KiB	393.37 KiB	372.61 KiB
9cc7e7c	22.84 KiB	403.13 KiB	380.29 KiB
94e1968	21.58 KiB	614.74 KiB	593.16 KiB
077e940	21.58 KiB	706.97 KiB	685.39 KiB
7a7de19	20.76 KiB	435.64 KiB	414.88 KiB

Previous results on branch: armcknight/ci/ios-swift-xcodegen

Startup times

Revision	Plain	With Sentry	Diff
cc90e07	1223.00 ms	1246.88 ms	23.88 ms
75f3397	1218.35 ms	1245.86 ms	27.51 ms

App size

Revision	Plain	With Sentry	Diff
cc90e07	22.31 KiB	852.05 KiB	829.74 KiB
75f3397	22.31 KiB	852.06 KiB	829.75 KiB