modify to git modules

Author: BAKAOLC

.gitmodules

@@ -16,3 +16,6 @@
 [submodule "game/packages/community-creations"]
 	path = game/packages/community-creations
 	url = https://github.com/Legacy-LuaSTG-Engine/Community-Creations
+[submodule "game/packages/lua-ffi-math"]
+	path = game/packages/lua-ffi-math
+	url = https://github.com/BAKAOLC/Lua-FFI-Math.git

game/config.json

@@ -50,6 +50,11 @@
                 "type": "directory",
                 "path": "packages/thlib-scripts-v2/"
             },
+            {
+                "name": "lua-ffi-math",
+                "type": "directory",
+                "path": "packages/lua-ffi-math/"
+            },
             {
                 "name": "community-creations",
                 "type": "directory",
@@ -69,7 +74,7 @@
     "window": {
         "title": "LuaSTG aex+",
         "cursor_visible": true,
-        "allow_window_corner": true
+        "allow_window_corner": false
     },
     "graphics_system": {
         "preferred_device_name": "",