CNDB-12459: add API to get major compaction tasks for given sstables

[jasonstack]

No description provided.

[github-actions]

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

[blambov]

We need to clarify somewhere what is the difference between a user compaction of some sstables vs a major compaction of the same sstables.

In the future we may also want to use the latter for user compactions (unless they have some "don't optimize" flag or something similar).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
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-1570 rejected by Butler

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1 new test failure(s) in 4 builds
See build details here

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Found 1 new test failures

Test	Explanation	Branch history	Upstream history
o.a.c.u.b.BinLogTest.testTruncationReleasesLogS...	regression	🔴🔴🔵🔴	🔵🔵🔵🔵🔵🔵🔵

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Found 11 known test failures