docs: add ktx/crashlytics.md to .opensource/project.json (#1862)
docs: add ktx/crashlytics.md to .opensource/project.json (#1862)


firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk,firebase/firebase-android-sdk