androidSdk/bin/emulator support

[kolchurinvv]

The WHY

For whatever reason my NixOS + nix develop shell which encapsulates my flutter project doesn't want to load qemu aka emulators into the Nvidia VRAM when launched via flutter emualtor --launch emulator_id, but the emulator @emulator_id -gpu host -accel on works like a charm.

The intention of the Draft PR is to gauge whether this affects other people and could be useful to a wider audience 😄
There could be potential to capture user input to extend the launch options with the ones listed inemulator --help

This adds a rudimentary support for **/*/androidSdk/bin/emulator binary.

• -gpu host, -accel on and others - currently hard-coded what i needed.
• creates another FlutterEmulatorsAvds list command which relies on emulator binary
• launches the emulators from the list via the emulator @emulator_id .. args

known issues:

• when emulator binary is used to launch the emulators, on closing the emulator, the entire log is pushed to the Notifications. I'm not sure what would be the best way to handle this
• this will probably break on MacOS - haven't tested it there (i do have a mac so i will be able to test there soon)
• no idea whether it'll work on Windows - can't test with that

[kolchurinvv]

@sidlatau sorry for the direct '@' -- only want to make sure this has been noticed :) would love to hear thoughts :)