Add support for PEP-735 dependency groups. #3144

Job	Run time
Check GitHub Organization	1s
tox -e py313-pip24_3_1	26m 49s
./dtox.sh -e py27-pip20	9m 24s
tox -e format-check,lint-check,typecheck,vendor-check,package,docs	8m 52s
tox -e py313-pip24_3_1-integration --shard 1/2	31m 28s
./dtox.sh -e py38-pip22_3_1	19m 0s
tox -e py313-pip24_3_1-integration --shard 2/2	26m 2s
./dtox.sh -e py311-pip23_3_2	19m 0s
./dtox.sh -e py313-pip24_3_1	14m 29s
./dtox.sh -e py314-pip24_3_1	14m 51s
./dtox.sh -e pypy310-pip24_3_1	28m 25s
./dtox.sh -e py27-pip20-integration	27m 22s
./dtox.sh -e py38-pip22_3_1-integration --shard 1/2	27m 44s
./dtox.sh -e py38-pip22_3_1-integration --shard 2/2	28m 49s
./dtox.sh -e py311-pip23_3_2-integration --shard 1/2	27m 27s
./dtox.sh -e py311-pip23_3_2-integration --shard 2/2	28m 56s
./dtox.sh -e py313-pip24_3_1-integration --shard 1/2	25m 11s
./dtox.sh -e py313-pip24_3_1-integration --shard 2/2	26m 52s
./dtox.sh -e py314-pip24_3_1-integration --shard 1/2	23m 44s
./dtox.sh -e py314-pip24_3_1-integration --shard 2/2	27m 4s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 1/2	45m 32s
./dtox.sh -e pypy310-pip24_3_1-integration --shard 2/2	49m 30s
Gather Final Status	1s
	8h 56m 33s

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