Miniscoping Rules
CPC has mini scoping rules, we should add those too.
However, there are also dual rules for \exists. For completeness sake, it might make sense to cover those too.
To discuss: maybe instead of and and or ours should be strong and weak version?
e.g. the strong one would be either \forall x. (F1 \land F2) = \forall x. F1 \land \forall x. F2 or \exists x. (F1 \lor F2) = \exists x. F1 \lor \exists x .F2
