Metadata management

[gsabater]

Allow users to edit their own metadata with custom values or select the source of where to take information.
For example, a game can have multiple and different names based on the source of where is taken, Steam API, Steam store page, etc...
Give tools to users to select from what source do they want the data, or set their own.

• Edit metadata for a selected game
• Select the source of a field to display and filter that value
• Allow users to set their custom artwork for a game