Add meta

Meta/api/IsMouseButtonDown.lua

@@ -0,0 +1,11 @@
+---@diagnostic disable: missing-return, lowercase-global
+
+---@param button 5 or Button5 
+---@param 1 or LeftButton  
+---@param 2 or RightButton  
+---@param 3 or MiddleButton  
+---@param 4 or Button4  
+---@param 5 or Button5  
+---@return 1nil isDown 
+---Returns whether a given mouse button is held down. If no button is specified, returns 1 if any mouse button is held down.
+function IsMouseButtonDown(button, 1 or LeftButton, 2 or RightButton, 3 or MiddleButton, 4 or Button4, 5 or Button5) end