feat: Add ability to have a user defined function to format the path display (#1000)

lua/telescope/utils.lua

@@ -274,12 +274,16 @@ end
 utils.transform_path = function(opts, path)
   local path_display = utils.get_default(opts.path_display, require('telescope.config').values.path_display)
 
+  local transformed_path = path
+
+  if type(path_display) == "function" then
+    return path_display(opts, transformed_path)
+  end
+
   if utils.is_path_hidden(nil, path_display) then
     return ''
   end
 
-  local transformed_path = path
-
   if vim.tbl_contains(path_display, "tail") then
     transformed_path = utils.path_tail(transformed_path)
   else