Convert Plotted ECG Waveforms to Geometrically Drawn

[tanjera]

"Ensure default QRS width is implemented from rhythm selection through to Tracing drawing" involves redrawing some rhythms geometrically (specifically plotted ECG rhythms. Making a new issue for this

Originally posted by @tanjera in #188 (comment)

This is to ensure QRS width and QTc actually draw through to the final morphology which isn't actually possible using plotted waveforms, though Plotting.Stretch_BySystoleRatio works adequately for many other morphology fixes (specifically pulsatile rhythms like ABP).

Specific rhythms needing to be redrawn (currently plotted):

• ECG_Complex_Idioventricular.iiwf
• ECG_Complex_VT.iiwf

[tanjera]

Note: Would involve plotting geometric functions in Waveform.Draw.cs e.g. in public static List<PointD> ECG_Complex__Idioventricular (Physiology? _P, Lead? _L) {