AmBeWaveform toolchain

[S81D]

Describe your changes

Toolchain to extract small AmBe PMT waveforms to a root file. These waveforms are stored in the Booster RWM aux channel and are useful for rejecting backgrounds for the AmBe neutron analysis.

Checklist before submitting your PR

• This PR implements a single change (one new/modified Tool, or a set of changes to implement one new/modified feature)
• This PR alters the minimum number of files to affect this change
• If this PR includes a new Tool, a README and minimal demonstration ToolChain is provided
• If a new Tool/ToolChain requires model or configuration files, their paths are not hard-coded, and means of generating those files is described in the readme, with examples provided on /pnfs/annie/persistent
• [N/A] For every new usage, there is a reason the data must be on the heap
• [N/A] For every new there is a delete, unless I explicitly know why (e.g. ROOT or a BoostStore takes ownership)

Additional Material

The FitRWMWaveform tool is designed to fit the Booster RF and Booster RWM waveforms from the beam. I am working to modify this tool so that it can do the background rejection in the actual tool and remove the need to store all those raw waveforms in a separate root file. Until that time comes, I have included a toolchain for the calibration folk to use to extract the small AmBe PMT waveforms.

We will still need this toolchain even when those changes are made though. Config files will be modified accordingly.