Wave Generator: Implement option to generate waves without PSLab Device

[mariobehling]

On the playstore we already find proprietary apps that provide a wave generator. Compare:
https://play.google.com/store/apps/details?id=com.luxdelux.frequencygenerator

Please add radio buttons to use either
a) the phone or
b) the PSLab to generate the waves.

Implement the feature in the app to make the instrument usable without a PSLab as well.

[dwlsalmeida]

Hey that seems like a nice start! I am willing to work on that as soon as I get the project to build on my machine.

[ho-dor]

I would like to work on this @mariobehling @neel1998

[dwlsalmeida]

@ho-dor hey man are you already on it? I can find something else then !

[ho-dor]

@dwlsalmeida go ahead.

[kartikaysharma01]

@dwlsalmeida Hi mate ... can I take over this issue ?

[dwlsalmeida]

Go ahead!