Refactor Helios Decision Circle Buffer

[dostuffthatmatters]

Current frame status evaluation:

• Perform the Canny edge detection and determine the frame status (good = 1, bad = 0) using the Helios-threshold
• Stores the individual frame statuses in a queue of length n. Output a decision of 1 if at least x of the last n images are good. Output 0 otherwise.

This is complication - for developers and users - without any benefit. A simpler approach is to store the edge-fractions inside the queue and compare the Helios-threshold to the average of the last n edge-fractions.

This way, we can get rid of the queue-threshold.