Implement `PpafmParameters` class based on `pydantic.BaseModel` #775

Job	Run time
Test docker image on ubuntu-latest	45s
test-package (3.7)	1m 21s
test-package (3.9)	1m 8s
test-package (3.10)	1m 6s
test-package (3.11)	1m 5s
test-package (3.12)	1m 11s
	6m 36s

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