Add Cursor rules #1238

Job	Run time
Run tests with different pydantic versions	3m 13s
Run tests (3.8)	1m 54s
Run tests (3.9)	1m 50s
Run tests with coverage	2m 45s
Run tests (3.10)	1m 54s
Run linters (pydocstyle)	1m 30s
Run linters (flake8)	1m 42s
Run tests (3.13)	1m 48s
Run linters (pylint)	1m 30s
Run linters (mypy)	1m 39s
Run tests (3.12)	1m 57s
Run tests (3.11)	1m 48s
	23m 30s

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