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/hello.lox

@@ -0,0 +1,34 @@
+var a = 12;
+var b = a * 2;
+
+{
+  var b = a * 3;
+  a = 42;
+  print b;
+}
+
+print a;
+print b;
+
+if (5 > 4)
+  print "it's true";
+else
+  print "it's false";
+
+if (false)
+  print "it's not true";
+
+if (true and false)
+  print "won't happen";
+
+if (true or false)
+  print "will happen";
+
+var n = 5;
+while (n > 0) {
+  print "counting down";
+  n = n - 1;
+}
+
+for(var i = 0; i < 10; i = i + 1)
+  print "bla";