[.NET10] multi-target net8.0-android;net10.0-android (#1118)

Context: dotnet/maui#28997
Context: #1148

.NET 10 binding assemblies have changes to generate better code to
support trimming and NativeAOT scenarios.

We want to ship a copy of .NET 10 assemblies alongside their `net8.0-android`
counterparts.

To verify API compatibility between the `net8.0-android` and `net10.0-android`
assemblies you can run:

    dotnet tool install --global Microsoft.DotNet.ApiCompat.Tool
    Get-Item *.nupkg | ForEach-Object { Write-Output "apicompat package $_" ; & apicompat package $_.Name 2>&1 | ForEach-Object { "$_" } } > apidiff.txt

At first, we saw ~452 errors, but all appear to be due to changes toward
"hiding" internal Kotlin members in .NET 9:

* dotnet/java-interop@06214ff

General list of changes:

* Update `_PackageLevelCustomizations.cshtml`
* metadata + Additions cleanup for net10.0
* `nuget.config` from dotnet/android added
* <CheckEolWorkloads>false</CheckEolWorkloads> needed to work around some warnings and errors
* Create nuget-install.cake
* Provision `platforms/android-34`
* `Update Metadata.xml`

    obj/Controls.DeviceTests/Debug/net10.0-android/android/src/mono/androidx/recyclerview/widget/RecyclerView_ItemAnimator_ItemAnimatorListenerImplementor.java(8,57): javac error JAVAC0000:  error: ItemAnimatorListener is not public in ItemAnimator; cannot be accessed from outside package

* [build] remove `Install extra Android SDK packages`
* `$(AndroidManifestType)=GoogleV2`

    Warning : Dependency `platforms;android-36` should have been installed but could not be resolved. You can attempt to install it with...

* Restore BaseOnOffsetChangedListener metadata.xml

    javac.exe error JAVAC0000:  error: BaseOnOffsetChangedListener cannot be inherited with different arguments: <com.google.android.material.appbar.AppBarLayout> and <>

* Fix javac error for `ActivityChooserModel`

    Xamarin.Android.Javac.targets(161,5): error XAJVC0000: C:\a\_work\1\s\artifacts\obj\Benchmarks.Droid\Release\net10.0-android\android-arm64\android\src\mono\androidx\appcompat\widget\ActivityChooserModel_OnChooseActivityListenerImplementor.java:8: error: package androidx.appcompat.widget.ActivityChooserModel does not exist
Xamarin.Android.Javac.targets(161,5): error XAJVC0000: 		androidx.appcompat.widget.ActivityChooserModel.OnChooseActivityListener
Xamarin.Android.Javac.targets(161,5): error XAJVC0000: 		                                              ^

Co-authored-by: Peter Collins <[email protected]>
Co-authored-by: Jonathan Peppers <[email protected]>

Author: 3 people

Directory.Build.props

@@ -9,6 +9,8 @@
     <_DefaultTargetFrameworks>net8.0-android</_DefaultTargetFrameworks>
     <_DefaultNetTargetFrameworks>net8.0</_DefaultNetTargetFrameworks>
 
+    <CheckEolWorkloads>false</CheckEolWorkloads>
+
     <!-- Enable DIM/SIM for Classic (defaults to true on .NET) -->
     <AndroidBoundInterfacesContainStaticAndDefaultInterfaceMethods>true</AndroidBoundInterfacesContainStaticAndDefaultInterfaceMethods>
 

build.cake

@@ -7,6 +7,7 @@
 #addin nuget:?package=SharpZipLib&version=1.4.2
 
 // Imported scripts
+#load "build/cake/nuget-install.cake"
 #load "build/cake/setup-environment.cake"
 #load "build/cake/update-config.cake"
 #load "build/cake/tests.cake"
@@ -18,6 +19,10 @@
 #load "build/cake/executive-order.cake"
 #load "build/cake/clean.cake"
 #load "build/cake/performance-timings.cake"
+#load "build/cake/build-android-libraries-net10-net8.cake"
+
+// Migrate packages to net10 
+bool IsMigratingNet10 = false;
 
 using System.Xml.Linq;
 using Newtonsoft.Json;
@@ -43,6 +48,13 @@ Information ($"BUILD_COMMIT         : {BUILD_COMMIT}");
 Information ($"BUILD_NUMBER         : {BUILD_NUMBER}");
 Information ($"BUILD_TIMESTAMP      : {BUILD_TIMESTAMP}");
 
+RunTarget("nuget-install");
+
+if (IsMigratingNet10) 
+{
+    RunTarget("build-android-libraries-net10-net8");
+}
+
 Task ("packages")
     .IsDependentOn ("binderate")
     .IsDependentOn ("nuget");

build/cake/build-and-package.cake

@@ -18,6 +18,9 @@ Task ("nuget")
         "./generated/AndroidX.sln", 
         new DotNetBuildSettings { MSBuildSettings = settings }
     );
+
+    RunTarget("nuget-uninstall");
+
 });
 
 Task ("nuget-pack-without-build")