Addon manager plugin support

Explain the feature

The Lua Language Server supports plugins that allow users to write custom Lua scripts that the language server will then run to output a modified file. As of right now, the addon manager will download the plugin.lua file, but it will not tell the server to use it. There should be some easy (and safe) way for users to enable a plugin that they have installed.

Are there any potential drawbacks from adding the feature?

There are some serious security concerns with downloading a script off the internet and running it automatically on the user's computer. While the addons being installed should be reviewed and trusted before being merged into LLS-addons, there is always the chance of something slipping through.

We could ask the user to review the code themselves before approving the request to enable it - but at the end of the day, the safest option will always be to not run code created by other users.

Inizia tracciando la gestione del file plugin.lua scaricato da parte di addon manager e consulta la documentazione di LuaLS sull’impostazione runtime.plugin. Chiarisci i requisiti di approvazione e sicurezza per abilitare un plugin installato, quindi definisci come verrà verificato il completamento senza eseguire automaticamente codice non revisionato.