[MU4] Fix #321771: Adding new SMuFL glyphs to MuseScore notehead library

[Jojo-Schmitz]

Resolves: https://musescore.org/en/node/321771

Adding these: https://w3c.github.io/smufl/latest/tables/techniques-noteheads.html
See also w3c/smufl#118 (which resulted in their addition)

[Jojo-Schmitz]

OK, they did show under "Notehead group", now also under "Custom"/"Edit Noteheads"

Additional difficulty: these 4 "Techniques noteheads" all come with a (short and up) stem and in the case of the "Swiss rudiments doublé" noteheads with a flag too, so the 'normal' stem, flag and beam would need to get disabled somehow.

Also unclear: whether and how to im- and/or export from/to MusicXML

[Jojo-Schmitz]

Reg. MusicXML export (and import?), see https://musescore.org/en/node/321771#comment-1109492:

if the notehead type is a non-standard shape not listed in the notehead-value table but with a defined SMuFL notehead glyph, encode as a notehead element with content "other" and an attribute "smufl" specifying the SMuFL canonical glyph name. For the new glyphs, the names would be: swissRudimentsNoteheadBlackFlam, swissRudimentsNoteheadHalfFlam, swissRudimentsNoteheadBlackDouble and swissRudimentsNoteheadHalfDouble (https://w3c.github.io/smufl/releases/1.4/tables/techniques-noteheads.html).

[ursgehrig]

Dear Jojo, thank you a lot for adding this commit regarding Fix #321771. Kindest, Urs

[randombenj]

@Jojo-Schmitz @ursgehrig Nice to see your efforts for the Swiss Drumming community 😄 🎉

I just built v4.0.2 from source, cherry-picking your commit @Jojo-Schmitz it works like a charm:

I am also currently creating a custom soundfont for rudimental drumming to have sound on both left and right sticks as
they have different pitches. So using the new font flam sounds could also be added to this soundfont.

Are there any plans to merge this soon @Jojo-Schmitz as this MR has been open for quite some time I see.
Let me know if there is anything I could help with.

Cheers, Benj

[Jojo-Schmitz]

It's not up to me to make the decision to merge this PR, but I'll mark it ready for review and will rebase it

[randombenj]

Perfect, thank you! As mentioned for anyone reviewing this change, this would enable us to annotate flams and doublé in swiss drumming style notation. So merging this would be highly appreciated :)