ref: Migrate sample apps to package references

[NinjaLikesCheez]

📜 Description

Migrate Sample apps to use package references (instead of project references) so that we can enable traits when testing v10 & any future trait we introduce.

💡 Motivation and Context

Sample apps currently reference the Xcode project rather than the SPM package, which means that we lose SPM traits in the sample apps. This can be worked around by manually setting compiler flags. However, it would be nicer if the sample apps use package references instead and inherit the ability to set traits within the Xcode UI.

💚 How did you test it?

This is a WIP - this section will be updated as time flows inevitably past us all. For now, I'm using 'it builds' as the check to move onto the next sample app and before setting this to 'ready-to-merge' I'll be doing a more thorough testing (including CI)

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.
• If I added a new public API, I also added it to the SentryObjC wrapper.

#skip-changelog

[NinjaLikesCheez]

Added label to trigger the CI, will move out of draft when it's ready for review

[sentry]

📲 Install Builds

iOS

🔗 App Name	App ID	Version	Configuration
SDK-Size	io.sentry.sample.SDK-Size	9.18.0 (1)	Release

⚙️ sentry-cocoa Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1221.17 ms	1253.23 ms	32.07 ms
Size	24.14 KiB	1.18 MiB	1.16 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
71e6611	1213.27 ms	1242.25 ms	28.98 ms
4014441	1232.16 ms	1266.41 ms	34.25 ms
1c5ecda	1219.35 ms	1253.76 ms	34.41 ms
655e96d	1217.63 ms	1258.34 ms	40.72 ms
a48979e	1244.58 ms	1269.00 ms	24.42 ms
ba5a1dd	1234.15 ms	1257.50 ms	23.35 ms
8bb6aeb	1215.82 ms	1244.84 ms	29.02 ms
da35aa2	1224.21 ms	1249.00 ms	24.79 ms
c3064bc	1227.20 ms	1248.25 ms	21.05 ms
943b250	1214.69 ms	1257.32 ms	42.63 ms

App size

Revision	Plain	With Sentry	Diff
71e6611	24.14 KiB	1.15 MiB	1.12 MiB
4014441	24.14 KiB	1.16 MiB	1.14 MiB
1c5ecda	24.14 KiB	1.15 MiB	1.12 MiB
655e96d	24.14 KiB	1.18 MiB	1.16 MiB
a48979e	24.14 KiB	1.17 MiB	1.15 MiB
ba5a1dd	24.14 KiB	1.18 MiB	1.16 MiB
8bb6aeb	24.14 KiB	1.17 MiB	1.15 MiB
da35aa2	24.14 KiB	1.15 MiB	1.13 MiB
c3064bc	24.14 KiB	1.18 MiB	1.15 MiB
943b250	24.14 KiB	1.17 MiB	1.15 MiB