feat: cycle prompt history (#521)

history is enabled on default but cycle_history_next and cycle_history_prev is not mapped yet

Example:
require('telescope').setup {
  defaults = {
    mappings = {
      i = {
        ["<C-Down>"] = require('telescope.actions').cycle_history_next,
        ["<C-Up>"] = require('telescope.actions').cycle_history_prev,
      }
    }
  }
}

For more information :help telescope.defaults.history

big thanks to clason and all other testers :)

lua/telescope/actions/state.lua

@@ -7,6 +7,7 @@
 ---@brief ]]
 
 local global_state = require('telescope.state')
+local conf = require('telescope.config').values
 
 local action_state = {}
 
@@ -36,4 +37,19 @@ function action_state.select_key_to_edit_key(type)
   return select_to_edit_map[type]
 end
 
+function action_state.get_current_history()
+  local history = global_state.get_global_key("history")
+  if not history then
+    if not conf.history or type(conf.history) ~= "table" then
+      history = require('telescope.actions.history').get_simple_history()
+      global_state.set_global_key("history", history)
+    else
+      history = conf.history.handler()
+      global_state.set_global_key("history", history)
+    end
+  end
+
+  return history
+end
+
 return action_state