Figure out padding while using non-monospace fonts

[codelif]

          > Maybe a fallback mode could be implemented if `font-family` is not a monospace font.

Any idea for an alternative? The problem with non-monospaced fonts is that each character takes up different space in a text, the amount of padding could have to increase or decrease based on the character choices.

Originally posted by @d3cryptofc in https://github.com/codelif/hyprnotify/issues/8#issuecomment-2374456052