Replace odb.find_commit by gix_traverse::commit::find

[cruessler]

This is another performance win. The speed-up varies greatly, depending on the specific case. As two examples, I compared gix blame STABILITY.md in gitoxide and gix blame README in linux.

gitoxide on  main [$?] is 📦 v0.41.0 via 🦀 v1.84.0 took 4s
❯ hyperfine "$HOME/github/Byron/gitoxide/target/release/gix blame STABILITY.md" "$HOME/worktrees/gitoxide/branch-1/target/release/gix blame STABILITY.md"
Benchmark 1: /home/christoph/github/Byron/gitoxide/target/release/gix blame STABILITY.md
  Time (mean ± σ):     111.6 ms ±   8.1 ms    [User: 91.9 ms, System: 12.5 ms]
  Range (min … max):   102.1 ms … 142.4 ms    28 runs

Benchmark 2: /home/christoph/worktrees/gitoxide/branch-1/target/release/gix blame STABILITY.md
  Time (mean ± σ):      69.8 ms ±   5.1 ms    [User: 51.7 ms, System: 11.2 ms]
  Range (min … max):    64.2 ms …  86.5 ms    44 runs

Summary
  '/home/christoph/worktrees/gitoxide/branch-1/target/release/gix blame STABILITY.md' ran
    1.60 ± 0.17 times faster than '/home/christoph/github/Byron/gitoxide/target/release/gix blame STABILITY.md'

linux on  master [⇣]
❯ hyperfine "$HOME/github/Byron/gitoxide/target/release/gix blame README" "$HOME/worktrees/gitoxide/branch-1/target/release/gix blame README"
Benchmark 1: /home/christoph/github/Byron/gitoxide/target/release/gix blame README
  Time (mean ± σ):     422.6 ms ±   3.4 ms    [User: 365.7 ms, System: 55.5 ms]
  Range (min … max):   419.4 ms … 429.6 ms    10 runs

Benchmark 2: /home/christoph/worktrees/gitoxide/branch-1/target/release/gix blame README
  Time (mean ± σ):     408.6 ms ±   3.1 ms    [User: 352.7 ms, System: 54.4 ms]
  Range (min … max):   403.9 ms … 414.1 ms    10 runs

Summary
  '/home/christoph/worktrees/gitoxide/branch-1/target/release/gix blame README' ran
    1.03 ± 0.01 times faster than '/home/christoph/github/Byron/gitoxide/target/release/gix blame README'

[Byron]

Sorry for the late response and thanks a lot, that's a great catch!

It's interesting how huge the performance improvement is in the gitoxide repository, and how small it is in Linux, but we take everything we get :D.

[Byron]

I could imagine providing this function as method on Either one day, which by then could probably also be renamed in something more specific.