Improve tests, update dependencies, and fix build

.editorconfig

.gitlab-ci.yml

app/build.gradle.kts

app/src/main/AndroidManifest.xml

...e/kuschku/quasseldroid/app/QuasseldroidReleaseDelegate.kt

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

...n/java/de/kuschku/quasseldroid/ui/chat/ToolbarFragment.kt

.../quasseldroid/ui/chat/add/create/ChannelCreateFragment.kt

...chku/quasseldroid/ui/chat/add/join/ChannelJoinFragment.kt

...hku/quasseldroid/ui/chat/add/query/QueryCreateFragment.kt

...uschku/quasseldroid/ui/chat/archive/ArchiveListAdapter.kt

...kuschku/quasseldroid/ui/chat/buffers/BufferListAdapter.kt

.../quasseldroid/ui/chat/buffers/BufferViewConfigFragment.kt

...kuschku/quasseldroid/ui/chat/input/AutoCompleteAdapter.kt

...de/kuschku/quasseldroid/ui/chat/input/ChatlineFragment.kt

...e/kuschku/quasseldroid/ui/chat/messages/MessageAdapter.kt

...chku/quasseldroid/ui/chat/messages/MessageListFragment.kt

...u/quasseldroid/ui/chat/messages/QuasselMessageRenderer.kt

...de/kuschku/quasseldroid/ui/chat/nicks/NickListFragment.kt

...va/de/kuschku/quasseldroid/ui/chat/topic/TopicFragment.kt