Move wheel install logic into Pex. #2330

Job	Run time
Check GitHub Organization	1s
tox -e format-check,typecheck,vendor-check,package	4m 23s
tox -e py312-pip23_3_1	18m 1s
./dtox.sh -e py27-pip20	3m 57s
tox -e py312-pip23_3_1-integration	17m 52s
./dtox.sh -e py27-pip20-integration	3m 32s
./dtox.sh -e py35-pip20	3m 56s
./dtox.sh -e py37-pip22_3_1-integration	3m 32s
./dtox.sh -e py311-pip20	3m 49s
./dtox.sh -e py37-pip23_1_2-integration	3m 50s
./dtox.sh -e py311-pip22_3_1	3m 8s
./dtox.sh -e py311-pip20-integration	3m 43s
./dtox.sh -e py311-pip23_1_2	3m 56s
./dtox.sh -e py311-pip22_3_1-integration	3m 43s
./dtox.sh -e py312-pip23_3_1	3m 55s
./dtox.sh -e py311-pip23_1_2-integration	2m 47s
./dtox.sh -e pypy310-pip20	3m 56s
./dtox.sh -e py312-pip23_3_1-integration	3m 11s
./dtox.sh -e pypy310-pip22_3_1	3m 43s
./dtox.sh -e pypy310-pip20-integration	3m 16s
./dtox.sh -e pypy310-pip23_1_2	3m 39s
./dtox.sh -e pypy310-pip22_3_1-integration	3m 18s
./dtox.sh -e pypy310-pip23_1_2-integration	3m 1s
Gather Final Status	1s
	1h 48m 10s

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