Merge branch '21-multi-module' into 'main'

build.gradle

mailbox-android/.gitignore

mailbox-android/build.gradle

mailbox-android/proguard-rules.pro

mailbox-android/src/main/AndroidManifest.xml

.../org/briarproject/mailbox/android/ApplicationComponent.kt

...va/org/briarproject/mailbox/android/MailboxApplication.kt

...riarproject/mailbox/android/MailboxNotificationManager.kt

...n/java/org/briarproject/mailbox/android/MailboxService.kt

...java/org/briarproject/mailbox/android/MailboxViewModel.kt

...ain/java/org/briarproject/mailbox/android/MainActivity.kt

...n/java/org/briarproject/mailbox/android/server/Routing.kt

...g/briarproject/mailbox/android/server/WebServerManager.kt

...-android/src/main/res/drawable/ic_launcher_foreground.xml

mailbox-android/src/main/res/layout/activity_main.xml

...ox-android/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

...roid/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

mailbox-android/src/main/res/values-night/themes.xml

mailbox-android/src/main/res/values/colors.xml

...ox-android/src/main/res/values/ic_launcher_background.xml