feat(bench): add bench for matrix transposition

[eholum]

Putting this in as a pre-requisite to #524.

Would like to get a baseline for square matrix transposes before adding support for non-square matrices.

[samueltardieu]

Nitpick: could you use "feat(bench): add bench for matrix transposition" in the title and I'll merge this? (colon and lower-case to add)

[eholum]

Nitpick: could you use "feat(bench): add bench for matrix transposition" in the title and I'll merge this? (colon and lower-case to add)

Done! Sorry, will also fix the format errors...

[samueltardieu]

Nitpick: could you use "feat(bench): add bench for matrix transposition" in the title and I'll merge this? (colon and lower-case to add)

Done! Sorry, will also fix the format errors...

I meant in the commit message. As soon as this is done I'll merge it, thanks again.

[codspeed-hq]

CodSpeed Performance Report

Merging #526 will not alter performance

_{Comparing eholum:add-matrix-benchmark (cd9a544) with main (6add39b)}

Summary

✅ 32 untouched benchmarks

🆕 1 new benchmarks

Benchmarks breakdown

	Benchmark	main	eholum:add-matrix-benchmark	Change
🆕	transpose	N/A	159.8 µs	N/A

[eholum]

I meant in the commit message.

Whoops, sorry! NOW it's fixed. I believe I also addressed the fmt/clippy errors.