Implement type-aware function argument parsing (SkriptLang#8098)

* Clean up expression list parsing

* Implement type-aware function argument parsing

Needs further optimization/cleanup

* Optimize OrderedExprInfo creation/usage

* Switch to Set of signatures

* Correct Unmodifiable annotations

* Fix expression list "and" checks

* Rename test effect

* Actually finish the rename

* Add projectile literal test

Author: APickledWalrus