Add ability to add alias for picker

[mmohaveri]

It would be awesome if we had the ability to add alias for pickers, for example: I use toggleterm to manage my terminals and I'm using a telescope picker to manage toggleterm, its picker is named "toggleterm_manager" but it would be much better if I was able to alias the name "terminal" for this picker.

[OliverChao]

hey @mmohaveri , thanks for your advice. And I think we can access this feature without adding any code.

1. picker-list will collect extensions loaded before it. And you can change the loading order on purpose. For example,

   require("telescope").load_extension("normal extensions")
   require("telescope").load_extension("picker_list")
   require("telescope").load_extension("you want to add alias")

   and then add name alias in user_pickers section.

   
       user_pickers = {
         {
           "name alias",
           function()
             vim.cmd([[Telescope ...]])
           end,
         },