fix: check function calls have correct number of args

src/main/wacc/Error.scala

@@ -6,8 +6,8 @@ import wacc.types._
 enum Error {
   case DuplicateDeclaration(ident: ast.Ident)
   case UndefinedIdentifier(ident: ast.Ident, identType: renamer.IdentType)
-  case FunctionParamsMismatch(expected: Int, got: Int) // TODO not fine
 
+  case FunctionParamsMismatch(pos: Position, expected: Int, got: Int)
   case SemanticError(pos: Position, msg: String)
   case TypeMismatch(pos: Position, expected: SemType, got: SemType, msg: String)
   case InternalError(pos: Position, msg: String)