v11.1.0

• Add missing dependencies illuminate/contracts and illuminate/database - #9
• Add \Astrotomic\Translatable\Contracts\Translatable interface
• Split \Astrotomic\Translatable\Translatable into multiple traits - but use them in the main one
• Add translation relationship - #3
• Flag methods, not defined in interface as @internal
• Rename getRelationKey() to getTranslationRelationKey() to prevent conflicts - the original one is @deprecated and will be dropped in next major release
• Update the where translation scopes to unify them and remove duplicated code - #2