Convert all plugin rezconfig to rezconfig.py

[brycegbrazen]

Effectively copied over work that @nerdvegas did back on this commit.

Closes #525.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 58.27%. Comparing base (3c75a19) to head (00a18a8). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1692 +/- ## ========================================== + Coverage 58.25% 58.27% +0.01% ========================================== Files 126 126 Lines 17157 17157 Branches 3504 3504 ========================================== + Hits 9995 9998 +3 + Misses 6496 6494 -2 + Partials 666 665 -1 ```

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[JeanChristopheMorinPerso]

Thanks @brycegbrazen. Did you notice a performance different between loading configs from python files instead of YAML? I feel like it'll be slightly faster with python files than with YAML since YAML is hard to parse and hence slow. But we should check to make sure there is no unexpected regression.

We could use https://github.com/sharkdp/hyperfine to test rez config plugins's speed on this PR versus the code we have on main.

[BryceGattis]

@JeanChristopheMorinPerso I didn't benchmark anything at this point, but that does sound like a great idea.

Should rez-benchmark include the ability to run CLI benchmarks like this? Or perhaps we should just set-up a new GitHub CI test that runs like all of our other ones?

[brycegbrazen]

I ran hyperfine before my update (on main):

hyperfine --warmup 3 "rez config plugins"
Benchmark 1: rez config plugins
  Time (mean ± σ):     427.9 ms ±   9.4 ms    [User: 204.7 ms, System: 180.3 ms]
  Range (min … max):   417.7 ms … 449.8 ms    10 runs

And then after the update:

hyperfine --warmup 3 "rez config plugins"
Benchmark 1: rez config plugins
  Time (mean ± σ):     429.7 ms ±  14.6 ms    [User: 217.5 ms, System: 179.1 ms]
  Range (min … max):   412.7 ms … 460.1 ms    10 runs

[JeanChristopheMorinPerso]

Thanks. I also tested on my machine and I see approximately the same stats for both:

Benchmark 1: /tmp/asd/old/bin/rez/rez-config plugins
  Time (mean ± σ):     250.1 ms ±   4.2 ms    [User: 206.3 ms, System: 42.7 ms]
  Range (min … max):   244.1 ms … 260.5 ms    11 runs

Benchmark 2: /tmp/asd/new/bin/rez/rez-config plugins
  Time (mean ± σ):     251.7 ms ±   4.5 ms    [User: 211.3 ms, System: 39.3 ms]
  Range (min … max):   246.0 ms … 262.8 ms    11 runs

Summary
  /tmp/asd/old/bin/rez/rez-config plugins ran
    1.01 ± 0.02 times faster than /tmp/asd/new/bin/rez/rez-config plugins

[JeanChristopheMorinPerso]

(correction, I wrongly installed rez in the previous run, my bad)

Benchmark 1: /tmp/asd/old/bin/rez/rez-config plugins
  Time (mean ± σ):     265.6 ms ±   4.0 ms    [User: 227.4 ms, System: 36.7 ms]
  Range (min … max):   258.2 ms … 270.2 ms    11 runs

Benchmark 2: /tmp/asd/new/bin/rez/rez-config plugins
  Time (mean ± σ):     250.6 ms ±   4.9 ms    [User: 214.5 ms, System: 34.4 ms]
  Range (min … max):   243.8 ms … 258.3 ms    11 runs

Summary
  /tmp/asd/new/bin/rez/rez-config plugins ran
    1.06 ± 0.03 times faster than /tmp/asd/old/bin/rez/rez-config plugins