Let \lyricmode et al apply an optional markup head to text music properties

Let \lyricmode et al apply an optional markup head to text music properties

This allows writing things like

\relative c' { c2 e4( g) c1 }
\addlyrics \lyricmode \with-color #red \fontsize #8 { This is great! }

Basically, all music containing a markup in the 'text music property
will have the markup mapped through the given music functions.


For \notemode, \chordmode and \drummode, this would mainly concern
text scripts.  No idea about \figuremode.