fix: regenerate api.txt for networkmock modules and add metalava PR check

[MaxMichel2]

Summary

• Regenerates api.txt for devview-networkmock and devview-networkmock-core to reflect API changes introduced before 0.1.3 (NetworkMockResourceLoader fun interface, responseSuffixes parameter, query param matching, delay support in models) that were never recorded — this was the root cause of the publish.yml failure for the 0.1.3 tag
• Deletes the stale 0.1.3.txt snapshots for those two modules (release.py will recreate them correctly when we re-run the release)
• Reverts the release prep artifacts (version back to 0.1.3-SNAPSHOT, changelog, docs/index.md) so release.py can re-run cleanly
• Fixes MetalavaConventionPlugin to declare explicit task dependencies on generateComposeResClass and generateExpectResourceCollectors, resolving implicit dependency validation errors when running with configuration cache
• Adds a metalava CI job to build.yml (runs on macOS, no disableAppleTargets, so iOS-specific APIs are included) — ensures stale api.txt is caught at PR time, not at publish time

After merging

Delete the old 0.1.3 tag and re-run the release script:

git tag -d 0.1.3
git push origin :refs/tags/0.1.3
python3 scripts/release.py 0.1.3 0.2.0-SNAPSHOT

Test plan

• metalavaCheckCompatibility passes in the new CI job on macOS
• After re-release, publish.yml triggered by the new 0.1.3 tag passes the build job
• 0.1.3 appears on Maven Central

🤖 Generated with Claude Code