ci: setup benchmarking CI

[avik-pal]

taking the scripts from https://github.com/JuliaHealth/KomaMRI.jl/

fixes #573

TODOs

• Can we cache the params after tuning?
• remove the Manifest.toml file
  • Needs refactor: simpler and more uniform internals LuxLib.jl#123 for full performance
• Add some more benchmarks

[github-actions]

Benchmark Results (ASV)

	main	c110721...	main/c11072169f4631...
basics/overhead	0.0902 ± 0.002 μs	0.0949 ± 0.0023 μs	0.951
time_to_load	1.07 ± 0.019 s	1.06 ± 0.0081 s	1.01

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.62%. Comparing base (5d71c13) to head (bab46fc).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #821      +/-   ##
==========================================
- Coverage   95.55%   90.62%   -4.94%     
==========================================
  Files          58       58              
  Lines        2856     2858       +2     
==========================================
- Hits         2729     2590     -139     
- Misses        127      268     +141     

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