Moved ProotState to own file.

Moved Point2D to own file.
Added caching for parsed images.

rpi/micTest.py

@@ -0,0 +1,12 @@
+# Print out realtime audio volume as ascii bars
+
+import sounddevice as sd
+import numpy as np
+
+def callback(indata: np.ndarray, outdata: np.ndarray, frames: int, time, status) -> None:
+    print(indata.shape)
+    volume_norm = np.linalg.norm(indata)*10
+    print ("|" * int(volume_norm))
+
+with sd.Stream(callback=callback):
+    sd.sleep(10000)