Implement `PpafmParameters` class based on `pydantic.BaseModel` #767

Job	Run time
Test docker image on ubuntu-latest	1m 49s
test-package (3.7)	5m 12s
test-package (3.9)	4m 7s
test-package (3.10)	3m 48s
test-package (3.11)	3m 51s
test-package (3.12)	5m 4s
	23m 51s

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