Add a /lay command

[SecretlyJealous]

Is your feature request related to a problem? Please describe.
I apologise if what I'm about to suggest is outside the scope of this plugin, but I was wondering if /lay could be implemented? There are a few other plugins that have /lay but they also come with their own /sit. I would prefer to use this plugin for /sit while also being able to use /lay.

Describe the solution you'd like
A /lay command

Additional context
For example a plugin called gsit has a /lay command:

[SpraxDev]

I did some testing and some research and this looks like a somewhat complicated matter – Especially in newer version (I tested in 1.19.2).

In case somebody wants to PR this or do some additional research:

• Apparently older Minecraft versions just have a Bed-Packet that can be send to everyone to fake the sleep animation
• There is ServerPlayer#startSleeping but it requires a bed (client side only?)
  • Maybe the coordinates of the bed do not have to match the player's?
• There is the ClientboundSetEntityDataPacket-Packet that might be used to send a Pose.SLEEPING
  • Has to be sent to all players that should see the given player/entity sleeping