Tests

Support error codes from plugins in options #17643

Job	Run time
Test mypyc suite with 32-bit Python	4m 3s
Test suite with py312-ubuntu, mypyc-compiled	28s
Test suite with py311-ubuntu	5m 23s
Test suite with py39-ubuntu, mypyc-compiled	26s
Test suite with py310-ubuntu	5m 23s
Type check our own code (py39-ubuntu)	1m 32s
Test suite with py313-windows-64	5m 20s
Test suite with py313-ubuntu, mypyc-compiled	27s
mypyc runtime tests with py39-macos	2m 9s
Test suite with py314-dev-ubuntu	2m 56s
Formatting and code style with Black + ruff	1m 38s
Type check our own code (py39-windows-64)	2m 3s
	31m 48s

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