[new-prom-metrics] prometheus metrics

[dechdev]

to track broadcasts, private messages, and token mint/burn/transfers

Signed-off-by: David Echelberger david.echelberger@kaleido.io

[awrichar]

Will the "start time" values be accurate if there are lots of things in flight (both from me and from others)? Seems like there's not enough correlation to determine the actual time taken by one particular message, transfer, etc.

[codecov-commenter]

Codecov Report

Merging #477 (366f29e) into main (82f55af) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #477   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          267       267           
  Lines        15257     15320   +63     
=========================================
+ Hits         15257     15320   +63     

Impacted Files	Coverage Δ
internal/events/operation_update.go	100.00% <ø> (ø)
internal/assets/manager.go	100.00% <100.00%> (ø)
internal/assets/token_transfer.go	100.00% <100.00%> (ø)
internal/batch/batch_manager.go	100.00% <100.00%> (ø)
internal/broadcast/manager.go	100.00% <100.00%> (ø)
internal/broadcast/message.go	100.00% <100.00%> (ø)
internal/events/aggregator.go	100.00% <100.00%> (ø)
internal/events/aggregator_batch_state.go	100.00% <100.00%> (ø)
internal/events/event_manager.go	100.00% <100.00%> (ø)
internal/events/tokens_transferred.go	100.00% <100.00%> (ø)
... and 2 more

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[dechdev]

Closing in favor of #503