A way to specify padding for each line where startify commands go.

Adding a way to specify custom padding for each entry in startify buffer can help arrange items in a way that looks more organized & hierarchical.

I think this would require adding a way to pass "pad" for ``type:"commands"`` and ``type:function('')``. The padding would be added to left of ``[]``, and cursor will jump to appropriate x-position of ``[]`` when navigating up/down the list.

Thanks!

Start by locating the code that handles startify entries of type "commands" and type function entries, then trace how their lines are rendered and how up/down navigation chooses the cursor position. Done means both entry types accept custom padding, the padding appears before the keybinding, and navigation places the cursor at the keybinding's x-position.

Written by the indexing model from the issue text.