chore(tazjin/rlox): Add some old code example files

Change-Id: I484b11069286ea2277e9e158fa5c3bd34f84c89e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3464
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

users/tazjin/rlox/examples/scope.lox

@@ -0,0 +1,19 @@
+var a = "global a";
+var b = "global b";
+var c = "global c";
+{
+  var a = "outer a";
+  var b = "outer b";
+  {
+    var a = "inner a";
+    print a;
+    print b;
+    print c;
+  }
+  print a;
+  print b;
+  print c;
+}
+print a;
+print b;
+print c;