Added logic_stripweapons entity

Specific entity to remove a weapon that targets a player activator
holds:

--keys--
keepfists: If yes, the stripallweapons input strips all weapons but
fists

--Inputs--
stripweapon: Strips a single weapon as mentioned in arguments
stripallweapons: Strips all weapons the activator has
setkeepfists: If 1 the stripallweapons inputs strip all weapons but
fists

gamemodes/zombiesurvival/entities/entities/logic_stripweapons/init.lua

@@ -0,0 +1,36 @@
+ENT.Type = "point"
+
+function ENT:Initialize()
+	self.KeepFists = self.KeepFists or 1
+end
+
+function ENT:AcceptInput(name, activator, caller, args)
+	name = string.lower(name)
+	if name == "stripweapon" then
+		if activator:IsPlayer() and activator:Alive() and activator:Team() == TEAM_HUMAN then
+				activator:StripWeapon(args)
+		end
+	elseif name == "stripallweapons" then
+		if activator:IsPlayer() and activator:Alive() and activator:Team() == TEAM_HUMAN then
+			if tonumber(self.KeepFists) == 1 then
+				local weps = activator:GetWeapons()
+				for k, v in pairs(weps) do
+					local weaponclass = v:GetClass()
+					if weaponclass ~= "weapon_zs_fists" then activator:StripWeapon(weaponclass) end
+				end
+			else
+				activator:StripWeapons(args)
+			end
+		end
+	elseif name == "setkeepfists" then
+		self.KeepFists = tonumber(args)
+	end
+end
+
+function ENT:KeyValue(key, value)
+	key = string.lower(key)
+	if key == "keepfists" then
+		self.KeepFists = tonumber(value)
+	end
+end
+