BlockCam version 2

I'm rewriting BlockCam to make it more efficient and use a more modern paradigm (I love words that end in "gm"), eg, SwiftUI. Fortunately, I can make heavy reuse of a lot of code from BlockCam and BumpCam (such as changing the camera from normal to selfie, as I tested here).

 

Also on the image is a waveform of the ambient sound in the room. I'm not very noisy...

Done