Split up the monster ci.yml workflow

[AdamGS]

Summary

ci.yml is reaching 1000 lines of YAML, which no one wants. This PR splits into 5 files:

1. ci.yml - now only contains linters and test runs
2. codspeed.yml - just codspeed benchmarks
3. cuda.yaml - all the cuda incantations
4. publish-dry-runs.yaml - all the dark magic that we have to try and make sure we can actually publish
5. rust-instrumented.yaml - rust-specific jobs that require nightly and some extra instrumentations (coverage, miri, etc)

The real magic here is that there are no changes to the job names, so all rules still apply!

This also makes github retries much easier, as github only allows retries after the whole workflow finishes.

[codspeed-hq]

Merging this PR will improve performance by 20.22%

⚡ 3 improved benchmarks
✅ 1160 untouched benchmarks
⏩ 1457 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	take_map[(0.1, 0.5)]	1,154.5 µs	985.6 µs	+17.14%
⚡	Simulation	take_map[(0.1, 1.0)]	2 ms	1.6 ms	+20.22%
⚡	Simulation	new_alp_prim_test_between[f32, 16384]	121.1 µs	106.9 µs	+13.29%

---

_{Comparing adamg/split-up-ci (755dcd6) with develop (3cd74b9)}

Footnotes

1. 1457 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩