Layout articulations in shadowNote as done in chordLayout

[RMRattray]

Resolves, in part: #14815

Towards parts 4-6 of that issue, this changes the ShadowNote::drawArticulations method to layout articulations similarly to how the ChordLayout::layoutArticulations functions do, albeit assuming default styling and treating the shadow note independently (rather than accessing a LayoutContext or other objects).

The methods it called, drawArticulation and drawMarcato, were replaced with drawCloseArticulation (for staccato and tenuto) and drawFarArticulation (including marcato, accent, and laissez-vibrer), based on (an equivalent to)* Articulation::layoutCloseToNote, because those categories are treated differently in chordLayout.

*(layoutCloseToNote itself is not used, as the ShadowNote has a set of SymIds, not real articulations in the DOM).

Tested with staccato, tenuto, marcato, and accent. ⚠️ Notably not tested with laissez-vibrer: those would still be drawn where 1cb862b left them drawn, and are not accounted for by staccato and tenuto marks - but it seems that laissez-vibrer isn't an option for the shadow note's note input method currently.

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