Merge pull request #6

* remove Xamarin. upgrade to net9. add maccatalyst and windows targets.
* windows ok
* update macios to use UIAlertController instead of UIAlertView
* add interface

Author: softlion

.github/workflows/main.yaml

@@ -11,7 +11,7 @@ jobs:
     runs-on: windows-latest
     environment: Default
     env:
-      NUPKG_MAJOR: 4.0.1
+      NUPKG_MAJOR: 5.0.0
       DOTNET_CLI_TELEMETRY_OPTOUT: true
       DOTNET_NOLOGO: true
       PROJECT: Vapolia.UserInteraction\Vapolia.UserInteraction.csproj
@@ -22,7 +22,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
 
 #    fixes error XA0031: Java SDK 11.0 or above is required when using $(TargetFrameworkVersion) v13.0. [D:\a\UserInteraction\UserInteraction\Vapolia.UserInteraction\Vapolia.UserInteraction.csproj::TargetFramework=MonoAndroid13.0]
       - uses: actions/setup-java@v2