Enable build without FxSound install as prerequisite

[faulkdev]

Is your feature request related to a problem? Please describe.
Yes, absolutely! We want to review the source code before we build the app so we do not have to use the prepackaged installer. However, we have to use the prepackaged installer in order to build the app.

Describe the solution you'd like
Remove the dependency to install FxSound prior to building FxSound. (That is, put the chicken after the egg.) For example, release the code for the virtual sound card.

Describe alternatives you've considered
Using different code base than FxSound.

Additional context
N/A

[bvijay74]

The virtual audio driver source code is available at https://github.com/[fxsound2/fxsound-driver](https://github.com/fxsound2/fxsound-driver)
You can build and install the driver and then build and run FxSound, if you want to avoid installing the signed driver through FxSound release installer.