* New hud/ability.ron file for ability localizations
* i18n keys are created by adding .name and .desc to ability id. Because
of how i18n worked (returning key if string wasn't found), it was
impossible to do because it leads to UB in case string is missed.
To solve this we've added get_opt method that returns None
* New Localization::get_or method for convinient fallback key usage
