Added types

tests/programs/param-multi.q

@@ -2,11 +2,11 @@ main() {
 	assert f(1, 2, 3) == 21
 }
 
-f(x, y, z) {
+f(x Int, y Int, z Int) -> Int {
 	w := g(4, 5, 6)
 	return x + y + z + w
 }
 
-g(x, y, z) {
+g(x Int, y Int, z Int) -> Int {
 	return x + y + z
 }