Patterns were already added to a few trace types in Plotly, like bar & scatter.

Hereby a first version to do so for pie charts, cf. Feature request: ability to add pattern fills to pie chart plotly#6134

only reference traceIn.marker.colors if traceIn.marker exists

Co-authored-by: Mojtaba Samimi <33888540+archmoj@users.noreply.github.com>

+ plot-schema.json after running npm run schema

fixes bug (trace.marker.shape) & logic.

The styleOne function is also used by the funnelarea trace type, which has no pattern in it's schema at the moment, so extra check if pattern exists, before checking if a shape exists within the pattern.

funnelarea pixel tests were broken, so use the point color in way more cases

add 5 pie charts, spread over the x domain, with increasing pattern functionalities

- take the index from the point in the styleOne function, instead of setting it before in the data structure
- zz-pie_pattern : height 500