add lua-enet addon & info

Author: masakk1

.gitmodules

@@ -212,3 +212,6 @@
 [submodule "addons/HLA-VScript/module"]
 	path = addons/HLA-VScript/module
 	url = https://github.com/FrostSource/HLA-VScript.git
+[submodule "addons/lua-enet/LuaCATS-lua-enet"]
+	path = addons/lua-enet/module
+	url = https://github.com/masakk1/LuaCATS-lua-enet.git

addons/lua-enet/info.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://raw.githubusercontent.com/LuaLS/LLS-Addons/main/schemas/addon_info.schema.json",
+  "name": "Lua-ENet",
+  "description": "Definitions for the Lua-ENet library",
+  "size": 12000,
+  "hasPlugin": false
+}