Implement chat message signing for 1.19.1+

[mdcfe]

Information

This PR refactors EssentialsX Chat in order to support chat previews and signed chat messages in 1.19.1.

Details

Environments tested:

• Most recent Paper version (1.19.1, git-Paper-102)
• Paper 1.18.2 (git-Paper-387)

Demonstration:

[JRoy]

first skim

[mdcfe]

Known issue: this inadvertently reformats /minecraft:tell. There's not much we can do about this in 2.19.x.

[Pantera07]

[17:46:50] [Async Chat Thread - #0/INFO]: Mad_Daniel: test
[17:46:57] [Server thread/INFO]: [Essentials] CONSOLE issued server command: /ess version
[17:46:57] [Server thread/INFO]: Server version: 1.19.2-R0.1-SNAPSHOT git-Paper-113 (MC: 1.19.2)
[17:46:57] [Server thread/INFO]: Brand version: Paper
[17:46:57] [Server thread/INFO]: EssentialsX version: 2.19.5-dev+38-6dfa18c
[17:46:57] [Server thread/INFO]: Vault version: 1.7.3-b131
[17:46:57] [Server thread/INFO]: EssentialsXChat version: 2.19.5-dev+38-6dfa18c
[17:46:57] [Server thread/INFO]: Economy Layer: None
[17:46:57] [Server thread/INFO]: Fetching version information...
[17:46:57] [Craft Scheduler Thread - 2 - Essentials/INFO]: You're running the latest EssentialsX dev build!
[17:50:03] [Server thread/INFO]: Plugins (3): Essentials, EssentialsChat, Vault

How can I solve this?

[mdcfe]

[...]

How can I solve this?

@Pantera07 Did you enable previews in your server.properties?

[Pantera07]

[...]
How can I solve this?

@Pantera07 Did you enable previews in your server.properties?

thank! I enable previews and this issue is resolved.