HyronicFriends - Connect players

1. Fix an item dupe in Send Mail GUI
   This is an oversight in the code from the original developer which causes the items to be wrongly selected and then causes the dupe when closing the GUI. This update corrects the item-selecting behavior in the GUI.
   Thanks @Eunsum for the report

1. Fix a Sound exception on 1.21.3

1. Fix Skull issues in recent server builds

1. Silently throw exceptions about Skull without interrupting the run
   Fix a weird issue with empty cached texture (I don't know why this exists)

Updates from Spigot

Ownership change notice

Fixes:

• Fixed an issue where attachments could not be sent via mail.

Hotfix:

• Fixed the plugin cannot be loaded.

News:

• Added MariaDB support.
• Added vanish mode support to EssentialsX and LiteVanish plugin.

Fixes:

• Fixed some minor bugs on 1.20.2

Fixes:

• Fixed some internal bugs.

Fixes:

• Fixed MySQL connection issue.

Changes:

• Added 1.20.2 support.
• Removed some unused code.

Fixed:

• Fixed some minor bugs.

News:

• Added the feature of sending friend requests quickly by clicking on a player.
• Added Toast as notification. Add these lines to your message file (SUCCESS option):

friend-online-toast: '&e{player} &6is online!'
friend-offline-toast: '&e{player} &cis offline!'
friend-request-toast: '&aYou received friend request from &e{player}&a!'
now-friend-toast: '&aYou and &e{player} &aare now friend!'
friend-request-declined-toast: '&e{player} &chas declined your friend request!'
new-mail-toast: '&aYou received new mail from &e{player}&a!'

Changes:

• Adjusted API events. For more information, please check document.

Fixes:

• Fixed an issue related to checking blacklisted items.

News:

• Added Simplified Chinese language.

Fixes:

• Fixed SQL statement.

News:

• Added a few placeholders, check our document.

Fixes:

• Fixed friend online status didn't work correctly.

News:

• Added Velocity supports.

Fixes:

• Fixed error when trying to load MySQL database.

Fixes:

• Fixed an issue related to mail command.
• Fixed a friend request not updating, even though it was responded to.

News:

• Added support for BungeeCord. Used to sync your data between servers. You can now download it via this link. Please check our wiki before using.
• Added private message for friend.

* Note: This update is almost breaks everything, you need to do a clean installation before using.

Simplify Oraxen/ItemsAdder configuration folder.

News:

• Fixed mail sending issue