Improve project discovery and community onboarding

[sonmbol]

Summary

• Add visible latest-release and CI badges plus direct integration-help and showcase links.
• Add generated release-note categories for future releases.
• Update the 1.0.1 launch kit with a demo storyboard, improved community copy, newsletter pitch, and seven-day schedule.
• Add guides explaining when Swift adapters are unnecessary and how to choose SKIE or KMP-NativeCoroutines.

Closes #10

Verification

• swift test -Xswiftc -strict-concurrency=complete -Xswiftc -warnings-as-errors — 32 tests passed.
• swift package dump-package passed.
• git diff --check passed.