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add column size analysis to show actual breakdown of column part sizes in segments
Description
WIP solution to #7124 to show internal breakdown of column parts to show what pieces are driving segment sizes
Release note
This PR has:
- [ ] been self-reviewed.
- [ ] using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
- [ ] added documentation for new or modified features or behaviors.
- [ ] a release note entry in the PR description.
- [ ] added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
- [ ] added or updated version, license, or notice information in licenses.yaml
- [ ] added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
- [ ] added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.