Add matched filter waveform analysis processors.

[rpitelka]

Add single PE matched filter processor and l1 deconvolution (sparse regression) processors.

TO-DO

• generalize template
  • currently template values can be stored in DIGITIZER_ANALYSIS ratdb table
  • need to allow for per PMT model type templates
  • templates could go in PMTPULSES data_driven tables, but analysis processor framework doesn't have access (I think)
• fix l1 deconvolution charge normalization
• make sure adding Eigen dependency is ok
• write rattest for processors
• add iterative matched filter processor