fix: moving cursor when duplicating current line (#10)

As opposed to all other cases, when duplicating the current line, the cursor is not moved to the duplicated content. This PR adds the missing movement one line down.

lua/duplicate/init.lua

@@ -45,6 +45,9 @@ local duplicate_cur_line = function()
   end
   local last_line = line_nr + line_count - 1
   vim.api.nvim_buf_set_lines(0, last_line, last_line, false, lines)
+  -- Set Cursor to duplicated line
+  local cursor_line, cursor_col = unpack(vim.api.nvim_win_get_cursor(0))
+  vim.api.nvim_win_set_cursor(0, { cursor_line + line_count, cursor_col })
 end
 
 -- Line indices are 1-based, columns are 0-based