rename jellyfinplayer to swiftfin

Podfile

@@ -4,18 +4,19 @@ def shared_pods
   pod 'SwiftGen'
 end
 
-target 'JellyfinPlayer iOS' do
+target 'Swiftfin iOS' do
   platform :ios, '15.0'
   shared_pods
   pod 'google-cast-sdk'
   pod 'MobileVLCKit'
   pod 'SwizzleSwift'
 end
-target 'JellyfinPlayer tvOS' do
+target 'Swiftfin tvOS' do
   platform :tvos, '15.0'
   shared_pods
   pod 'TVVLCKit'
 end
-target 'WidgetExtension' do
+target 'Swiftfin Widget' do
+  platform :ios, '15.0'
   shared_pods
 end