Alerts migration for fully qualified class names

Background

In v1.29.0 and below, DiscordSRV listened to every single Bukkit event by hackily registering to every HandlerList. This causes various performance issues as well as some unexpected side effects with special events. Paper 1.21.5 has blocked the ability to change the handlerlist collection, preventing this approach from working entirely.

Solution

Starting with v1.30.0, DiscordSRV now requires that all event names be defined using their fully-qualified names (that is, including their package name). For example instead of PlayerTeleportEvent you need to use org.bukkit.event.player.PlayerTeleportEvent.

Upgrading

Look for the fully-qualified class names from Paper's javadocs or from the documentation of plugin's that your alerts are from. Below is an image for how to identify the fully-qualified class name for an event on javadocs. Javadocs usually have search at the top right