Renaming ApiSecurityService method "checkAPIKey" to more purpose like names

[ytendx]

The method names in https://github.com/AunaCraft/ChatLog/blob/master/src/main/java/net/aunacraft/chatlogger/service/APISecurityService.java are not describing what they are doing.

In my opinion a "...check..." method should everytime return a value and not nothing.

public void checkAPIKey(String apiKey) {
        APIKey key = repository.findById(apiKey).orElseThrow(InvalidAPIKeyException::new);
        key.use();
        repository.save(key);
 }