Feat: controller

[rebelonion]

Fixes:

• Calling onExtensionSelected on disabled extensions other than music
• SettingTextInput not updating the shown value immediately after setting

Additions

MessagePostClient

• Allows an extension to hook into mutableMessageFlow to post messages other than errors
• Interface uses delegate/callback

CloseableClient

• Allows extensions to close resources the app closes
• Tied to the player service which should be the last thing running in the app
• In my case this was useful for closing a websocket that otherwise kept running after the app was closed

ControllerClient

• Allows an extension to perform actions directly onto the player
• Uses functions for app->extension communication and callbacks for extension->app communication
• Nicely documented

examples:

Echo Song Skipper

• skips songs based off of song or artist name automatically

Echo Remote Control

• connects to a control app through a websocket server to remotely control playback