I would like to know if there is any way that one can generate an audio tone of a specific frequency and play it through plugged in headphones on either the right or left side of the headphones. Is there any possible was to do this with code or a module such as AudioKit.
Yes, just use the AKOscillator node:
https://audiokit.io/docs/Classes/AKOscillator.html
to create the frequency:
var osc = AKOscillator()
osc.frequency = 440 // or whatever
and then use an AKPanner node:
https://audiokit.io/docs/Classes/AKPanner.html
and
https://audiokit.io/playgrounds/Basics/Stereo%20Panning/
And set the pan
to -1
for left and 1
for right:
var panner = AKPanner(osc)
panner.pan = -1 // or 1