Android export

Based on this tweet https://twitter.com/mikolasan/status/1465378386788896778?s=20

Editor settings

Go to Editor -> Editor Setings -> General -> Export -> Android

When Android Studio is installed. But JDK is required for Jarsigner (Install JDK first [answer](https://stackoverflow.com/a/12135749/1104612))

Ref: [editor code](https://github.com/godotengine/godot/blob/96e70ac5f4f477eee3866ea788389a87d0dbd086/platform/android/export/export_plugin.cpp#L1962)

ADB C:\Users\<username>\AppData\Local\Android\Sdk\platform-tools\adb.exe

jarsigner: C:\Program Files\AdoptOpenJDK\jdk-11.0.8.10-hotspot\bin\jarsigner.exe

Debug keystore: C:\Users\<username>\.android\debug.keystore

Debug keystore user: androiddebugkey

Debug keystore password: android

Android SDK path: C:\Users\<username>\AppData\Local\Android\Sdk

apksigner: C:\Users\<username>\AppData\Local\Android\Sdk\build-tools\<build tools version>\apksigner.bat

Troubleshooting

Could not install to device

Test with adb.

adb install Sudoku16x16.apk