feat: add additional metrics

[mattp-swirldslabs]

Description:

Related issue(s):

Closes #149 , #150 , #151

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[AlfredoG87]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (514d2d9) to head (c0c03be).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main      #164   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
+ Complexity       135       133    -2     
===========================================
  Files             26        27    +1     
  Lines            511       535   +24     
  Branches          27        29    +2     
===========================================
+ Hits             511       535   +24     

Files with missing lines	Coverage Δ
...va/com/hedera/block/server/BlockStreamService.java	100.00% <100.00%> (ø)
...ava/com/hedera/block/server/ServiceStatusImpl.java	100.00% <100.00%> (ø)
...erver/consumer/ConsumerStreamResponseObserver.java	100.00% <100.00%> (ø)
.../block/server/mediator/LiveStreamMediatorImpl.java	100.00% <100.00%> (ø)
...era/block/server/metrics/BlockNodeMetricTypes.java	100.00% <100.00%> (ø)
...edera/block/server/metrics/MetricsServiceImpl.java	100.00% <100.00%> (ø)
...er/persistence/storage/write/BlockAsDirWriter.java	100.00% <100.00%> (ø)
...ock/server/producer/ProducerBlockItemObserver.java	100.00% <100.00%> (ø)