GitHub Action - Android Emulator Runner

A GitHub Action for installing, configuring and running Android Emulators on macOS virtual machines.

TODO

This action must be run on a macOS VM, e.g. macOS-latest or macOS-10.14.

Configurations

Input	Required	Default	Description
`api-level`	Required	N/A	API level of the platform system image - e.g. 23 for Android Marshmallow, 29 for Android 10. Minimum API level supported is 21.
`target`	Optional	`default`	Target of the system image - `default` or `google_apis`.
`abi`	Optional	`x86`	CPU / ABI of the system image - `x86` or `x86_64`.
`headless`	Optional	`true`	Whether to launch emulator without UI - `true` or `false`. When set to `true` this is equivalent to running the emulator with `emulator -no-window`.

TODO