[EN] [FEATURE] Add marketplace servers integration

[GerardoWacker]

Feature request for the client in general

Add marketplace support, in terms of GUI and backend connection. This requires a build of the modloader to be released.

This includes a text field to search for mods, and a list, which by default shows "trending" or "most downloaded", but if a key is typed, and the field's text length is greater that 3 characters, search that term and display results on the same list.
Each item in the list includes an install button. If the mod es already installed, insert a "config" and an "uninstall" button.