Separate folders per channel, log fixes, Z-axis grease...

[jmcoreymv]

Includes the following:

• Ability to save protocol captures in separate folders per channel
• Z-axis grease redistribution during protocol when using autofocus
• Fix log rotation and sizing
• Fix log output directory due to case inconsistency
• Update to prevent next protocol scan from starting if current scan is still in progress
• Add support for setting logging level in json config
• Configure max exposure value based on layer type
• Add support for engineering mode
• Add support for overlaying crosshairs on live image
• Add support for bullseye display in engineering mode
• Add support for image mean/stddev stats in engineering mode
• Add ability to disable image saving in engineering mode
• Update logging format to include millisecond resolution
• Adjust position of camera controls to be centered