Tests

Add --list-install-types flag #21953

Job	Run time
Test mypyc suite with 32-bit Python	10m 46s
Test suite with py312-ubuntu	9m 40s
Test suite with py311-ubuntu	9m 13s
Type check our own code (py310-windows-64)	1m 50s
Test suite with py314-windows-64	30m 44s
mypyc runtime tests with py313-macos	5m 47s
Test suite with py314-ubuntu, mypyc-compiled	15m 46s
Parallel tests with py314-ubuntu, interpreted	24m 10s
Test suite with py314t-ubuntu, mypyc-compiled	17m 29s
mypyc runtime tests with py310-ubuntu	6m 55s
Formatting and code style with Black + ruff	1m 58s
Test suite with py313-ubuntu, mypyc-compiled	15m 34s
Type check our own code (py310-ubuntu)	1m 15s
Parallel tests with py314-windows-64, interpreted	10m 42s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 20s
Test suite with py310-ubuntu, mypyc-compiled	16m 44s
	3h 26m 53s

Provide feedback