[ENH] [MEGAPR] Blockfile refactor, compactor job, record segment

[HammadB]

Description of changes

Summarize the changes made by this PR.

• Improvements & Bug fixes
  • /
• New functionality
  • This PR contains a very large refactor the blockfile code to make it strongly typed and zero-copy. It is a lot of prototype-quality code. I am getting it merged to test on staging but subsequently will clean this all up. We should not normalize this and its an extreme deviance from the norm.

Test plan

How are these changes tested?

• Tests pass locally with pytest for python, yarn test for js, cargo test for rust

Documentation Changes

None

[HammadB]

• [ENH] Add rust metadata gprc reader #2075
• [ENH] Query merging #2066
• [ENH] [MEGAPR] Blockfile refactor, compactor job, record segment #2052 👈
• [ENH] Add a materialized record type as well as make segment interface chunk #1964
• [ENH] Change DataChunk to Chunk and make Generic #1963
• main

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Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)