[FEAT] Add ability to set global IOConfig

[jaychia]

Planning configs:

• Config flags that are used in LogicalPlan building and construction
• Includes IOConfigs, and these are eagerly created and put onto the logical plans
• This exists as a mutable global singleton, and are not propagated to remote workers since all planning work should happen client-side

Execution configs:

• Config flags that are used in the execution chain (logical-to-physical-translation, physical-to-task-generation, task-scheduling, task-execution)
• These should be "frozen" per-unique-execution, and used unambiguously throughout that execution

[codecov]

Codecov Report

Merging #1710 (1d9e0ec) into main (668399b) will decrease coverage by 3.13%.
The diff coverage is 85.96%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1710      +/-   ##
==========================================
- Coverage   85.22%   82.10%   -3.13%     
==========================================
  Files          55       55              
  Lines        5517     5515       -2     
==========================================
- Hits         4702     4528     -174     
- Misses        815      987     +172     

Files	Coverage Δ
daft/dataframe/dataframe.py	87.28% <100.00%> (+0.04%)	⬆️
daft/expressions/expressions.py	92.09% <100.00%> (ø)
daft/io/_csv.py	95.23% <100.00%> (+0.50%)	⬆️
daft/io/_json.py	100.00% <100.00%> (ø)
daft/io/_parquet.py	100.00% <100.00%> (ø)
daft/logical/builder.py	87.50% <100.00%> (-1.79%)	⬇️
daft/runners/pyrunner.py	94.18% <100.00%> (-1.73%)	⬇️
daft/runners/ray_runner.py	87.79% <100.00%> (-1.61%)	⬇️
daft/__init__.py	24.24% <0.00%> (-0.76%)	⬇️
daft/io/_iceberg.py	21.27% <0.00%> (ø)
... and 1 more

... and 10 files with indirect coverage changes