✅ add test scripts

test/functions.jce

@@ -0,0 +1,12 @@
+def test $text $varname &$printed
+	global ${$varname}
+	mov $printed true
+	echo $text " " ${$varname}
+end
+
+mov $b 42
+mov $printed false
+
+drw "printed? " $printed
+test "value of b is:" $b $printed
+drw "printed? " $printed

test/hello-world.jce

@@ -0,0 +1 @@
+echo "hello world"

test/jumps-loops.jce

@@ -0,0 +1,7 @@
+move $q 0
+loop:
+	echo $q
+
+add $q 1
+ifl $q < 10
+	jump "loop"