[docs] Update CONTRIBUTING.md Poetry dev install

[ourownstory]

The dev install instructions are still for pip and setuptools, but we have moved to poetry. This PR is for updating the instructions.

[github-actions]

Model Benchmark

Benchmark	Metric	main	current	diff
YosemiteTemps	MAE_val	1.34899	1.34899	0.0%	✅
YosemiteTemps	RMSE_val	2.00817	2.00817	0.0%	✅
YosemiteTemps	Loss_val	0.00078	0.00078	0.0%	✅
YosemiteTemps	MAE	1.32133	1.32133	0.0%	✅
YosemiteTemps	RMSE	2.13713	2.13713	0.0%	✅
YosemiteTemps	Loss	0.00064	0.00064	0.0%	✅
YosemiteTemps	time	64.2308	67.35	4.86%	⚠️
PeytonManning	MAE_val	0.58162	0.58162	0.0%	✅
PeytonManning	RMSE_val	0.72218	0.72218	0.0%	✅
PeytonManning	Loss_val	0.01239	0.01239	0.0%	✅
PeytonManning	MAE	0.41671	0.41671	0.0%	✅
PeytonManning	RMSE	0.55961	0.55961	0.0%	✅
PeytonManning	Loss	0.00612	0.00612	0.0%	✅
PeytonManning	time	13.9343	13.78	-1.11%	✅
AirPassengers	MAE_val	13.0627	13.0627	0.0%	✅
AirPassengers	RMSE_val	15.9453	15.9453	0.0%	✅
AirPassengers	Loss_val	0.00131	0.00131	0.0%	✅
AirPassengers	MAE	9.88153	9.88153	0.0%	✅
AirPassengers	RMSE	11.7354	11.7354	0.0%	✅
AirPassengers	Loss	0.00052	0.00052	0.0%	✅
AirPassengers	time	5.89906	5.77	-2.19%	✅

Model training plots

Model Training

PeytonManning

YosemiteTemps

AirPassengers

[codecov]

Codecov Report

Merging #1357 (c95d227) into main (8d65428) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1357   +/-   ##
=======================================
  Coverage   89.91%   89.91%           
=======================================
  Files          38       38           
  Lines        5097     5097           
=======================================
  Hits         4583     4583           
  Misses        514      514           

[ourownstory]

@hxyue1 Here is a beginning of a draft for updating the dev wiki.