Plugins infrastructure

Context : https://mastodon.technology/@agateblue/104444213352771496 and https://governance.funkwhale.audio/d/QyEBOaV6/status-of-our-nlnet-funding

• User level plugins
• USe cases:
  • scrobbling
  • import remote files (eg. via webdav/owncloud) -> will be done separately
• Configuration per plugin per user
• Functionnal as much as possible
• Hooks -> no return value
• Filters -> can alter the return value -> mrf
• Plugins can declare dependencies
• enabled plugins are listed as an env variable
• Plugins are simple directories with
  • a funkwhale_startup.py file that is imported at startup time
  • a funkwhale_ready.py file that is imported when apps are ready
• Plugins entrypoints are all listed in a single file, with proper documentation

Demo