Move wheel install logic into Pex. #2328

Job	Run time
Check GitHub Organization	1s
./dtox.sh -e py27-pip20	12m 5s
tox -e format-check,typecheck,vendor-check,package	4m 25s
tox -e py312-pip23_3_1	29m 4s
tox -e py312-pip23_3_1-integration	28m 49s
./dtox.sh -e py35-pip20	14m 54s
./dtox.sh -e py311-pip20	14m 28s
./dtox.sh -e py311-pip22_3_1	15m 11s
./dtox.sh -e py311-pip23_1_2	15m 59s
./dtox.sh -e py312-pip23_3_1	13m 49s
./dtox.sh -e pypy310-pip20	23m 50s
./dtox.sh -e pypy310-pip22_3_1	24m 9s
./dtox.sh -e pypy310-pip23_1_2	23m 52s
./dtox.sh -e py27-pip20-integration	18m 45s
./dtox.sh -e py37-pip22_3_1-integration	24m 9s
./dtox.sh -e py37-pip23_1_2-integration	24m 10s
./dtox.sh -e py311-pip20-integration	20m 50s
./dtox.sh -e py311-pip22_3_1-integration	24m 9s
./dtox.sh -e py311-pip23_1_2-integration	24m 10s
./dtox.sh -e py312-pip23_3_1-integration	24m 10s
./dtox.sh -e pypy310-pip20-integration	24m 9s
./dtox.sh -e pypy310-pip22_3_1-integration	24m 10s
./dtox.sh -e pypy310-pip23_1_2-integration	24m 8s
Gather Final Status	0s
	7h 33m 26s

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