[feat] Plugins should be able to self disclaim metadata

[FabianLars]

Describe the problem

#10596 made me remember this idea we've had. Right now we hard code all the information about plugins in the cli but it'd be better if we could store it on the plugin side instead. Useful for example if a mobile only plugin adds support for desktop at a later date.

Describe the solution you'd like

Maybeeee a metadata config in the plugin's Cargo.toml file.

Alternatives considered

Simply not doing this because http requests are always a point of failure (most often because of firewalls/proxies)

Additional context

No response