Implement algorithm for HLT2 bandwidth monitoring

Add new BandwidthMonitor algorithm to generate histograms for HLT2 BW monitoring.

Histograms added:

Per line

• Positive decisions (1D)
• Exclusive decisions (1D)
• Average event size (1DProf)
• Average DstData size (1DProf)

Per WG

• Same as above, plus:
• Overlap of positive decisions between WGs (2D)

Other

• Average rawBank size per rawBank type (1DProf)

Configured in Moore!4907 (merged)