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/var.lox

@@ -0,0 +1,8 @@
+{
+
+{
+  var a = 5;
+  print a;
+}
+
+}