Shadow container

[roubachof]

Implements #470

[CLAassistant]

All committers have signed the CLA.

[Xiaoy312]

also, forgot to mention you will have to adhere to: www.conventionalcommits.org

[roubachof]

all should be good now :)

[kazo0]

@roubachof Looks like there are just some merge conflicts to resolve

@ebariche I am seeing the CI fail with the Failed to run emscripten error message, not sure what that's about?

[roubachof]

@kazo0 conflicts fixed!

[kazo0]

@roubachof I believe the remaining CI failures should be fixed after you upgrade SkiaSharp to 2.88.3 or later

[agneszitte]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[roubachof]

I upgraded to SkiaSharp 2.88.3 to tackle a wasm script issues, but it seems it made tests failed for some reasons...

[roubachof]

it seems that updating to 2.88.3 to resolve the emscript issue caused by 2.88.2 on CI induced this exception on Android:

[monodroid] JNIEnv.FindClass(Type) caught unexpected exception: Java.Lang.ClassNotFoundException: crc641bba16f87fb10160.SKXamlCanvas ---> Java.Lang.ClassNotFoundException: Didn't find class "crc641bba16f87fb10160.SKXamlCanvas" on path: DexPathList[[zip file "/data/app/~~jJG9QmxuVQK6BHk5FQYOeQ==/uno.platform.toolkit-uFmXBuAHsA7MyJDUfnMz0A==/base.apk"],nativeLibraryDirectories=[/data/app/~~jJG9QmxuVQK6BHk5FQYOeQ==/uno.platform.toolkit-uFmXBuAHsA7MyJDUfnMz0A==/lib/x86_64, /data/app/~~jJG9QmxuVQK6BHk5FQYOeQ==/uno.platform.toolkit-uFmXBuAHsA7MyJDUfnMz0A==/base.apk!/lib/x86_64, /system/lib64, /system_ext/lib64]]
[monodroid]    --- End of inner exception stack trace ---
[monodroid]   at Java.Interop.JniEnvironment+StaticMethods.CallStaticObjectMethod (Java.Interop.JniObjectReference type, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00068] in /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/JniEnvironment.g.cs:12890 
[monodroid]   at Android.Runtime.JNIEnv.FindClass (System.String classname) 

Exception gone after rebasing to main

[jeromelaban]

@eriklimakc is this PR sill used ? If not, let's close it.

[roubachof]

duplicate of #638