feat: Urbanairship example apps

[denischilik]

Background

• Partner facing Example apps for Urbanairship Kit

What Has Changed

• Add two apps Swift and Objc

Screenshots/Video

• {Include any screenshots or video demonstrating the new feature or fix, if applicable}

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Additional Notes

• {Any additional information or context relevant to this PR}

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes https://go/j/[ticket-number]

[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	1.82 MB	1.66 MB	-156 KB
Executable Impact	896 bytes	896 bytes	+N/A
XCFramework Size	9.49 MB	5.47 MB	-4112 KB

✅ This change decreases SDK size impact.

Raw measurements

Target branch (main):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1944,"with_sdk_executable_size_bytes":76360,"sdk_impact_kb":1860,"sdk_executable_impact_bytes":896,"xcframework_size_kb":9716}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":1788,"with_sdk_executable_size_bytes":76360,"sdk_impact_kb":1704,"sdk_executable_impact_bytes":896,"xcframework_size_kb":5604}

[nickolas-dimitrakas]

LGTM