fix(node): Add a warning to using old node

I don't think it will even get that far to run but nice to have

src/bot.ts

@@ -15,5 +15,9 @@ async function main() {
   else await getLocalImage(conf)
 }
 
+if (Number(process.versions.node.split('.')[0]) < 16) {
+  console.error("Please upgrade to node 16. NO GUARENTEES!")
+}
+
 // Run the main function, obviously.
 main()