Fix for material tab layout

[moljac]

Support Libraries Version (AndroidX Material 1.1.0):

Related issue: xamarin/java.interop#590

TabLayout.OnTabSelectedListener extends TabLayout.BaseOnTabSelectedListener<TabLayout.Tab>, and as the Java Callable Wrapper attempts to implement both interfaces, even though TabLayout.OnTabSelectedListener extends TabLayout.BaseOnTabSelectedListener, the result doesn't compile.

A possible workaround is to bypass this bug in the Java Callable Wrapper generator by binding a new Java class which has the appropriate inheritance hierarchy:

package jcw_kludge;

public class MainAppCompatActivity extends androidx.appcompat.app.AppCompatActivity
    implements com.google.android.material.tabs.TabLayout.OnTabSelectedListener
{
    public void onTabSelected(com.google.android.material.tabs.TabLayout.Tab tab) {}
    public void onTabUnselected(com.google.android.material.tabs.TabLayout.Tab tab) {}
    public void onTabReselected(com.google.android.material.tabs.TabLayout.Tab tab) {}
}

Does this change any of the generated binding API's?

Yes. New class is added.

Describe your contribution

1. added new AndroidLibrary Xamarin.Google.Android.Material.Extensions with java class TabLayoutAppCompatActivity
2. added Xamarin.Android bindings for new AndroidLibrary from step 1.

[moljac]

Issue: #76

[moljac]

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