New plotstyle filledlines#399

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goettlic wants to merge 2 commits intoghtmtt:masterfrom

goettlic:new-plotstyle-filledlines

Commits on Jan 14, 2026

Ignore QtCreator stuff
goettlic
committed

Commits on Feb 2, 2026

Add new plottype filled lines, some adjustments in changing the labels of the used widgets, adding zerolinecolor to make the x- and y-axes visible
goettlic
committed