* refactor(jellyfinapi): use the external api class for jellyfin api requests
refactors jellyfin api requests to be handled by the external api
to be consistent with how other external api requests are made
related #728, related #387
* style: prettier formatted
* refactor(jellyfinapi): rename device in auth header as jellyseerr
* refactor(error): rename api error code generic to unknown
* refactor(errorcodes): consistent casing of error code enums
* fix(logging): handle media server connection refused error/toast
Properly log as connection refused if the jellyfin/emby server is unreachable. Previously it used to
throw a credentials error which lead to a lot of confusion
* refactor(i8n): extract translation keys
* refactor(auth): error message for a more consistent format
* refactor(auth/errors): use custom error types and error codes instead of abusing error messages
* refactor(i8n): replace connection refused translation key with invalidurl
* fix(error): combine auth and api error class into a single one called network error
* fix(error): use the new network error and network error codes in auth/api
* refactor(error): rename NetworkError to ApiError
