[🚀 Feature Request ]: Support EMULATOR_SYS_IMG argument

### Idea

It would be great if the SYS_IMG could be passed as an argument.

This would allow, for example, `armeabi-v7a` to be selected as the image which can be run without KVM. [This project](https://github.com/thyrlian/AndroidSDK#vnc) has a no-KVM emulator example which I managed to run successfully.

This would also require the `change_permission` function in `emulator.py` to not throw an exception if `/dev/kvm` is not available.

I understand that the emulator would be slow without KVM, but I believe it would make the project much more versatile without many changes.

### Probelm to solve

Running the emulator without KVM

### Additional Note

_No response_