Feature Request: Show wedding date in relationship chart

[Vdauphin]

Is your feature request related to a problem? Please describe. When drawing the relationship chart, there are no wedding date

Describe the solution you'd like Between birth and death date, I would like to have the wedding date

Describe alternatives you've considered I click on the individual detail to access to the wedding date

Additional context

https://github.com/geostag/gramps-web/blob/main/src/charts/RelationshipChart.js#L435-L455

Thank you for your hard work!