Add more benchmarks

[SolarDrew]

Try slower plot again to see how it does now with performance improvements from #370. I don't expect this to be merged soon, or even worked on necessarily, but I'm interested to see how fast we can get the longer plots running.

Turns out the improvements haven't made enough difference to the performance to be able to use the slower plots so this has just become a PR to add some extra benchmarks. Will work on more performance improvements another time and try and use the slower plots when possible.

[codspeed-hq]

CodSpeed Performance Report

Merging #387 will not alter performance

_{Comparing SolarDrew:benchmarking-codspeed (275bd42) with main (f2d8e79)}

Summary

✅ 3 untouched benchmarks

🆕 4 new benchmarks

Benchmarks breakdown

	Benchmark	main	SolarDrew:benchmarking-codspeed	Change
🆕	test_generate_celestial	N/A	5.2 ms	N/A
🆕	test_raveled_tab1d_model	N/A	1.1 ms	N/A
🆕	test_slice_dataset	N/A	65.1 ms	N/A
🆕	test_update_celestial	N/A	610.7 µs	N/A

[SolarDrew]

Not sure what else really needs benchmarking, suggestions welcome. Otherwise this is good to go.

[Cadair]

One small tweak otherwise I think this is good.