Fix cli

1. will work now (it used the old import before)
2. will now run for each argument separately - I made it merge them all before, but after all, basically all command line interfaces have multiple ways of making one argument with spaces/newlines. For example using `\ ` or just `""`...

Author: oplik0

cli.ts

@@ -1,4 +1,9 @@
-import { yaqrcode } from "./mod.ts";
+import { qrcode } from "./mod.ts";
 
-console.log(`${Deno.args.join(" ")}:
-${await yaqrcode(Deno.args.join(" "))}`);
+if (import.meta.main) {
+  for (let arg of Deno.args) {
+    console.log(`
+${arg}:
+${await qrcode(arg)}`);
+  }
+}