feat: Emby support (#234)

* fix: support credential extraction from Emby

* fix: minor compatibility with emby for retrieving albums

* fix: rename credentials and save credentials type

* fix: weird issue when changing libraries

* fix: correctly map platform names in auth header

* chore: properly carry over old settings

* fix: only enable playlists on jellyfin

* fix: remove jellyfin mentions

* fix: incorporate jellyfin and emby as mentions

src/screens/modals/SetJellyfinServer/index.tsx

@@ -22,7 +22,7 @@ export default function SetJellyfinServer() {
     const navigation = useNavigation();
 
     // Save creedentials to store and close the modal
-    const saveCredentials = useCallback((credentials: AppState['settings']['jellyfin']) => {
+    const saveCredentials = useCallback((credentials: AppState['settings']['credentials']) => {
         if (credentials) {
             dispatch(setJellyfinCredentials(credentials));
             navigation.dispatch(StackActions.popToTop());    
@@ -39,7 +39,7 @@ export default function SetJellyfinServer() {
             ) : (
                 <View style={{ padding: 20, flex: 1, justifyContent: 'center', alignItems: 'center' }}>
                     <Text>
-                        {t('set-jellyfin-server-instruction')}
+                        {t('set-server-instruction')}
                     </Text>
                     <Input
                         placeholder="https://jellyfin.yourserver.io/"
@@ -51,7 +51,7 @@ export default function SetJellyfinServer() {
                         style={[ defaultStyles.input, { width: '100%' } ]}
                     />
                     <Button
-                        title={t('set-jellyfin-server')}
+                        title={t('set-server')}
                         onPress={() => setIsLogginIn(true)}
                         disabled={!serverUrl?.length} 
                         color={defaultStyles.themeColor.color}