Added API login method for SiCKRAGE external API using new SSO API key
Removed SiCKRAGE SSO offline token usage in favour of SiCKRAGE SSO API key
Improved OAuth2 handling for external SiCKRAGE API
Added external series provider API support
Added migration code to convert lang column on tv_shows table to ISO639-3
Added migration code to convert offline token to apikey