WIP Built some initial e2e datafusion infrastructure

[SarveshOO7]

Problem

We want to be able to run our queries on datafusion.

Summary of changes

The only update I have is that I have setup the datafusion e2e to be able to run multiple queries and print the results and the plans. Currently, since we do not have an optimizer built out and we don’t have an logical plan IR to convert the datafusion logical plan into, I am simply running the datafusion optimizer.

[connortsui20]

Should we call this optd-datafusion instead or something more descriptive than "infra"?

Make sure to fix all of the clippy lints (you can either look at the Files changed tab on GitHub or just run cargo clippy --all-targets

Also, please add comments on everything because I can't really understand the code...

See the official Rust style guide as well for things that clippy cant check (things like full punctuation on comments)

[connortsui20]

It might be a good idea to fully rebase everything on top of main, something like git rebase -i $(git merge-base HEAD master) and just squash everything into a single commit

[SarveshOO7]

Yes, I agree. Most of what was done here has become useless. However, I think I'll still try and make a version of this stuff work on this branch and then worry about moving stuff around later.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 163 lines in your changes missing coverage. Please review.

Project coverage is 0.0%. Comparing base (c41cf41) to head (ae97fec).

Files with missing lines	Patch %	Lines
optd-datafusion/src/lib.rs	0.0%	97 Missing ⚠️
optd-datafusion/src/main.rs	0.0%	66 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
optd-datafusion/src/main.rs	0.0% <0.0%> (ø)
optd-datafusion/src/lib.rs	0.0% <0.0%> (ø)