feat: implement proper IR with value handles with dynamic and transferable types

example.rx

@@ -2,17 +2,17 @@ extern putchar
 
 fn hello() {
     local h = 72
-    local e = 69
-    local l = 76
-    local o = 79
     putchar(h)
+    local e = h - 3
     putchar(e)
+    local l = h + 4
     putchar(l)
     putchar(l)
+    local o = 100 - 21
     putchar(o)
 }
 
 fn main() {
     hello()
-    putchar(9 + 1)
+    putchar(3 * 3 + 1)
 }