Refactor API functions to improve parameter aliasing and enhance documentation clarity

api/select.lua

@@ -1,9 +1,8 @@
 ---@diagnostic disable: missing-return, lowercase-global
 ---@meta
 
----@param index number 
----@param # string 
----@param ... list 
----@return list ... 
----Returns one or more values from a list (...), or the number of values in a list
-function select(index, #, ...) end
+---@param index number|"#"
+---@param ... any
+---@return ... any
+---Returns one or more values from a list (...) (if using index), or the number of values in a list (if using #)
+function select(index, ...) end