Guitar string number

String numbers can be added to chords. They use the same positioning mechanism as finger instructions.

\version "2.24"

%% http://lsr.di.unimi.it/LSR/Item?id=217

\relative c' {
  \set fingeringOrientations = #'(down left up)
  \set stringNumberOrientations = #'(down right up)
  <c\5>4
  <e\4>
  <g\3>2
  <c,\5 e\4 g\3>1
}