Updated CNNImage Tool:

(including previous changes)
- added useLAPPDs config file setting
- added WriteToFile config file setting
- removed PMT-wise config setting. It is still "supported" within the config file, but will just remap to "Static"
- better pmt dimensionality selection
- refactored a lot of the functionality to be split into smaller methods
- PMT binning is now calculated once at the initialization of the tool, during execution a simple lookup is performed instead of recalculating the PMT binning for each hit
- Histograms of PMT images are reset each executio step instead of being deleted and recreated
- charge, absolute charge, time and time first images are added to the RecoEvent boost store as vector<double>
- The number of edge case floating point operations has been reduced