Add a sprucing bandwidth test

A new bandwidth tests, Moore_spruce_bandwidth, is added to monitor the rate/event size/bandwidth of Sprucing lines.

A qmtest in Moore is also added here to make sure the big test in LHCbPR won't crash.

Work towards lhcb-dpa/project#199 and #507 (closed).

Needed by lhcb-datapkg/PRConfig!306 (merged).