@OptIn
added some opt-in markers on API which should have: - `appendMiraiCodeTo` Made API stable (otherwise they require too heavy opt-ins): - MiraiConsoleImplementation$ConsoleLaunchOptions - LowLevelApi
- EventChannel.asChannel - (internal) syncFromEventImpl - EmptyMessageChain - GroupEntranceAnnouncementChangeEvent - MiraiConsole.createLogger - SingletonExtensionPoint
mirai-console-frontend-base