[DRAFT] Implement push down filters on dataframe queries

[timsaucer]

There are still a variety of things that need to be done:

• - I still need to implement between and in_list
• - I need to support all types of time and conversion from datafusion time units into compatible ones (easy)
• - We need a lot of testing around this because the logic is complex
• - Multiple requests to query dataset can create overlapping chunks, so filter down to distinct values
• - Need to ensure this is all supported on both OSS and dataplatform. I have been testing against data platform, and it may be that we don't end up with much performance difference on the OSS server.
• Add documentation (user facing) including migration guide

[github-actions]

Web viewer built successfully.

Result	Commit	Link	Manifest
✅	9e4392a	https://rerun.io/viewer/pr/12147	+nightly +main

View image diff on kitdiff.

^{Note: This comment is updated whenever you push a commit.}

[timsaucer]

@ntjohnson1 @abey79 Still a lot to do on this PR, but here's the basic functionality to get started.