CNDB-11782: additional messaging metrics

[jakubzytka]

New message-oriented metrics: node message handling time (per message type), and time spent by each message handler on the relevant stage (again per message type)

What is the issue

The isssue is lack of visibility into how much time nodes actually spend handling messages.
So far, we only had cross-node metrics.

What does this PR fix and why was it fixed

This PR adds two additional metrics:

• node total (queue+execution) message handling time
• execution time of the message handler in the relevant stage

Checklist before you submit for review

• Make sure there is a PR in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-1426 rejected by Butler

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1 new test failure(s) in 3 builds
See build details here

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Found 1 new test failures

Test	Explanation	Branch history	Upstream history
...et=list,wide=false,scenario=SSTABLE_QUERY]	flaky	🔵🔴🔵	🔵🔵🔵🔵🔵🔵🔵

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Found 13 known test failures