Add Lua-sided backwards compatibility for HOOKS pointer rename

Themes/_fallback/Scripts/00 compat.lua

@@ -0,0 +1,17 @@
+-- this file is for some lua backwards compatibility purposes
+-- add to this as C++ Lua bindings become refactored or renamed as needed
+
+
+-- ArchHooks
+-- used to be referred to as HOOKS:f(etc)
+-- now Arch.f(etc)
+-- DO NOT SHADOW THIS NAME
+HOOKS = {}
+-- old names for compat
+Arch["AppHasFocus"] = Arch.isGameFocused
+Arch["GetArchName"] = Arch.getSystem
+Arch["GetClipboard"] = Arch.getClipboard
+Arch["ShowCursor"] = Arch.setCursorVisible
+for k,v in pairs(Arch) do
+    HOOKS[k] = function(_, ...) return v(...) end
+end