feat: Add selection and start actions

lua/telescope/actions.lua

@@ -0,0 +1,25 @@
+-- Actions functions that are useful for people creating their own mappings.
+
+local state = require('telescope.state')
+
+local actions = {}
+
+
+--- Get the current picker object for the prompt
+function actions.get_current_picker(prompt_bufnr)
+  return state.get_status(prompt_bufnr).picker
+end
+
+--- Move the current selection of a picker {change} rows.
+--- Handles not overflowing / underflowing the list.
+function actions.shift_current_selection(prompt_bufnr, change)
+  actions.get_current_picker(prompt_bufnr):move_selection(change)
+end
+
+--- Get the current entry
+function actions.get_selected_entry(prompt_bufnr)
+  return actions.get_current_picker(prompt_bufnr):get_selection()
+end
+
+
+return actions