Implement about and crash screens

app/build.gradle.kts

app/sampledata/contributors.json

app/sampledata/libraries.json

app/src/main/AndroidManifest.xml

...ain/java/de/kuschku/quasseldroid/dagger/ActivityModule.kt

...main/java/de/kuschku/quasseldroid/ui/chat/ChatActivity.kt

...main/java/de/kuschku/quasseldroid/ui/chat/input/Editor.kt

...va/de/kuschku/quasseldroid/ui/chat/input/FormatHandler.kt

...a/de/kuschku/quasseldroid/ui/settings/SettingsActivity.kt

...u/quasseldroid/ui/settings/about/AboutSettingsActivity.kt

...u/quasseldroid/ui/settings/about/AboutSettingsFragment.kt

...ldroid/ui/settings/about/AboutSettingsFragmentProvider.kt

.../de/kuschku/quasseldroid/ui/settings/about/Contributor.kt

...chku/quasseldroid/ui/settings/about/ContributorAdapter.kt

...java/de/kuschku/quasseldroid/ui/settings/about/Library.kt

.../kuschku/quasseldroid/ui/settings/about/LibraryAdapter.kt

...java/de/kuschku/quasseldroid/ui/settings/about/License.kt

...schku/quasseldroid/ui/settings/app/AppSettingsActivity.kt

...u/quasseldroid/ui/settings/crash/CrashSettingsActivity.kt

...u/quasseldroid/ui/settings/crash/CrashSettingsFragment.kt