Tests

Allow nativeparse to parse source code directly #22289

Job	Run time
Test mypyc suite with 32-bit Python	10m 29s
Test suite with py311-ubuntu	9m 31s
Test suite with py315-ubuntu, mypyc-compiled	1m 41s
Test suite with py312-ubuntu	9m 55s
mypyc runtime tests with py310-ubuntu	6m 57s
Formatting and code style with Black + ruff	2m 4s
Test suite with py313-ubuntu, mypyc-compiled	1m 16s
Test suite with py314-ubuntu, mypyc-compiled	1m 16s
mypyc runtime tests with py313-macos	7m 17s
Type check our own code (py310-ubuntu)	30s
Test suite with py310-ubuntu, mypyc-compiled	1m 33s
Parallel tests with py314-ubuntu, interpreted	21m 22s
Parallel tests with py314-windows-64, interpreted	8m 24s
Test suite with py314-windows-64	31m 3s
Type check our own code (py310-windows-64)	1m 9s
Parallel tests with py314-ubuntu, mypyc-compiled	1m 15s
Test suite with py314t-ubuntu, mypyc-compiled	1m 22s
	1h 57m 4s

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