ref(user feedback): move objc sources to correct location

[armcknight]

As promised regarding #4364 (comment), move the sources to the correct location. Also taking this opportunity to rename the classes per #4364 (comment)

for #4270

#skip-changelog

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1237.56 ms	1255.98 ms	18.42 ms
Size	21.90 KiB	724.10 KiB	702.20 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
e84bc3f	1196.62 ms	1218.86 ms	22.24 ms
cc31630	1235.22 ms	1252.51 ms	17.29 ms
f576153	1210.02 ms	1228.94 ms	18.92 ms
becc941	1221.90 ms	1240.37 ms	18.47 ms
3cd0156	1216.37 ms	1232.84 ms	16.47 ms
18d491a	1229.78 ms	1252.67 ms	22.90 ms
f8833c4	1229.69 ms	1236.45 ms	6.76 ms
69d2789	1235.73 ms	1254.00 ms	18.27 ms
070db34	1228.64 ms	1240.24 ms	11.61 ms
3a31fc9	1237.35 ms	1249.02 ms	11.67 ms

App size

Revision	Plain	With Sentry	Diff
e84bc3f	20.76 KiB	434.72 KiB	413.96 KiB
cc31630	21.58 KiB	694.58 KiB	672.99 KiB
f576153	20.76 KiB	425.77 KiB	405.01 KiB
becc941	21.58 KiB	419.82 KiB	398.24 KiB
3cd0156	21.58 KiB	706.47 KiB	684.89 KiB
18d491a	21.58 KiB	544.87 KiB	523.29 KiB
f8833c4	21.58 KiB	422.66 KiB	401.08 KiB
69d2789	21.58 KiB	548.09 KiB	526.51 KiB
070db34	21.58 KiB	574.17 KiB	552.59 KiB
3a31fc9	20.76 KiB	414.45 KiB	393.69 KiB

[philipphofmann]

LGTM