[Feature Request] - Add the posibility to change and/or edit the configuration file for emulators

[Xenoxis]

Currently, it's impossible to set/change options and configurations on all emulators, which it's very not great to use.

It would be great to add the possibility to change/edit the configuration file of emulators.

[Samsagax]

Nice feature to add and should not be too complex. We may end up with something like mangohud configuration editor on the app.

[alkazar]

You can edit the retroarch configuration by creating override files at the location described here: https://github.com/ChimeraOS/chimera#configuration

[Xenoxis]

I will make this option in chimera @alkazar

[alkazar]

Duplicate of #88