`npc_beneathticle` issues

[ampreeT]

• Tongue length will not reset after a kill. There may be no behavior surrounding the beneathticle resetting as they only grab the player and never release.
  • The only instance I have found of a beneathticle grabbing a non-player was the first encounter in bm_c4a1b. Should we disable beneathticles that have killed a player and how should we handle player suicides (ex. instantly snap the tongue length back to the original position)?
• Player angles will snap on grab and upon killing the beneathticle in both singleplayer and multiplayer
• Ducking prediction issues while being grabbed
• Player killed by beneathticles will have their ragdolls clip outside of the map
• Players killed by beneathticles will appear to be outside of the map after respawn (Invalid view entity?)

bm_c4a1c:

[Alienmario]

As alternative to additional workarounds, we could simply disable prediction for grabbed players.

[Alienmario]

Ducking, sound and shooting issues can be prevented with cl_predict 0 (current weapon workaround could be removed).
Ragdoll and and what appears to be fake death are newish, I don't remember those pre last game update.
I'm fine with tongue not resetting.

[ampreeT]

I opted to creating a new implementation of the AI which addresses almost every issue found with the beneathticle as most of the issues that I've found also happen on singleplayer. Work in progress draft #217