[BUG] Requester recursively throws exception when URL is not valid.

[Raft08]

Hey,
When provided an incorrect url (or Url missing http:// or https://) the requester will recursively throw an IllegalArgumentException until the program crashes or is stopped.

I'm working on a fix in a PR.

Here is how to reproduce the bug:

PteroClient client = PteroBuilder.createClient("example.com", "<secret-token>");

Account account = client.retrieveAccount()
                    .execute();

[Raft08]

The issues is that the RateLimiter request queue iterator doesn't remove the element when it fails.

https://github.com/mattmalec/Pterodactyl4J/blob/develop/src/main/java/com/mattmalec/pterodactyl4j/requests/RateLimiter.java see catch block at line 156