[FEAT] Add tracing for runner

[jaychia]

Adds tracing for the RayRunner. This is turned off by default, and can be deactivated via DAFT_ENABLE_RAY_TRACING=1.

Visualize this with https://ui.perfetto.dev/

1. The RayRunner dispatch loop view gives us a good idea of what that crazy while loop is doing, as well as overall Ray metrics such as number of tasks in flight, number of cores available etc
2. The Ray Task Execution view gives us a view of the Ray Tasks that were scheduled, when they were received as completed and also their ResourceRequests.

3. I also added views for each node and their worker processes. These views get updated on the end of every "wave" by polling a metrics actor
4. A "Stages" view allows us to point to the tasks that were launched by each stage, into (3)

[codspeed-hq]

CodSpeed Performance Report

Merging #3113 will degrade performances by 53.29%

_{Comparing jay/scheduler-tracing (9db3da2) with main (f566125)}

Summary

⚡ 1 improvements
❌ 2 regressions
✅ 14 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	jay/scheduler-tracing	Change
❌	test_count[1 Small File]	3.2 ms	3.6 ms	-12.55%
⚡	test_iter_rows_first_row[100 Small Files]	358.8 ms	224.4 ms	+59.91%
❌	test_show[100 Small Files]	24 ms	51.4 ms	-53.29%

[codecov]

Codecov Report

Attention: Patch coverage is 67.94258% with 134 lines in your changes missing coverage. Please review.

Project coverage is 77.79%. Comparing base (0d669ca) to head (9db3da2).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
daft/runners/ray_tracing.py	63.17%	88 Missing ⚠️
daft/runners/ray_metrics.py	55.29%	38 Missing ⚠️
daft/runners/ray_runner.py	95.00%	4 Missing ⚠️
src/common/daft-config/src/lib.rs	57.14%	3 Missing ⚠️
src/common/daft-config/src/python.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3113      +/-   ##
==========================================
- Coverage   79.13%   77.79%   -1.34%     
==========================================
  Files         637      645       +8     
  Lines       77982    79915    +1933     
==========================================
+ Hits        61712    62171     +459     
- Misses      16270    17744    +1474     

Files with missing lines	Coverage Δ
src/common/daft-config/src/python.rs	78.19% <85.71%> (+0.29%)	⬆️
src/common/daft-config/src/lib.rs	79.36% <57.14%> (-8.14%)	⬇️
daft/runners/ray_runner.py	81.62% <95.00%> (+0.67%)	⬆️
daft/runners/ray_metrics.py	55.29% <55.29%> (ø)
daft/runners/ray_tracing.py	63.17% <63.17%> (ø)

... and 190 files with indirect coverage changes