[FEAT] [New Query Planner] Support for Ray runner in new query planner.

[clarkzinzow]

This PR enables the Ray runner in the new query planner. This is accomplished by encapsulating the Rust-side PhysicalPlan in a Python-facing PhysicalPlanScheduler, which we then make pickleable.

TODOs

• Add support for ResourceRequests

[codecov]

Codecov Report

Merging #1265 (a98ec1a) into main (6a12680) will increase coverage by 0.05%.
Report is 5 commits behind head on main.
The diff coverage is 91.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1265      +/-   ##
==========================================
+ Coverage   87.61%   87.66%   +0.05%     
==========================================
  Files          62       61       -1     
  Lines        6047     6009      -38     
==========================================
- Hits         5298     5268      -30     
+ Misses        749      741       -8     

Files Changed	Coverage Δ
daft/__init__.py	26.31% <0.00%> (ø)
daft/execution/execution_step.py	93.67% <ø> (-0.02%)	⬇️
daft/runners/runner.py	81.48% <ø> (+1.48%)	⬆️
daft/logical/builder.py	78.57% <50.00%> (-0.89%)	⬇️
daft/logical/logical_plan.py	79.49% <75.00%> (+0.05%)	⬆️
daft/logical/rust_logical_plan.py	85.31% <83.33%> (+0.85%)	⬆️
daft/dataframe/dataframe.py	88.95% <100.00%> (-0.03%)	⬇️
daft/execution/physical_plan.py	94.56% <100.00%> (-0.02%)	⬇️
daft/execution/rust_physical_plan_shim.py	98.27% <100.00%> (+0.12%)	⬆️
daft/logical/optimizer.py	97.92% <100.00%> (-0.01%)	⬇️
... and 6 more

... and 2 files with indirect coverage changes