Implement RPC stubs for quassel

.../protocol/serializers/quassel/TransferIdListSerializer.kt

.../protocol/serializers/quassel/TransferStatusSerializer.kt

libquassel-state/build.gradle.kts

libquassel-state/gradle.properties

...in/de/justjanne/libquassel/state/protocol/AliasManager.kt

...janne/libquassel/state/protocol/BacklogManagerProtocol.kt

...stjanne/libquassel/state/protocol/BufferSyncerProtocol.kt

...nne/libquassel/state/protocol/BufferViewConfigProtocol.kt

...ne/libquassel/state/protocol/BufferViewManagerProtocol.kt

...ustjanne/libquassel/state/protocol/CertManagerProtocol.kt

...e/justjanne/libquassel/state/protocol/CoreInfoProtocol.kt

.../justjanne/libquassel/state/protocol/DccConfigProtocol.kt

...libquassel/state/protocol/HighlightRuleManagerProtocol.kt

...e/justjanne/libquassel/state/protocol/IdentityProtocol.kt

...ne/libquassel/state/protocol/IgnoreListManagerProtocol.kt

...justjanne/libquassel/state/protocol/IrcChannelProtocol.kt

...tjanne/libquassel/state/protocol/IrcListHelperProtocol.kt

...de/justjanne/libquassel/state/protocol/IrcUserProtocol.kt

...tjanne/libquassel/state/protocol/NetworkConfigProtocol.kt

...de/justjanne/libquassel/state/protocol/NetworkProtocol.kt