(Arts-specific) Organization Template

[dlh28]

Based on discussions with Digital Discoverability Program participants (who are interested in adding structured data templates for their "About Us" pages as well as their event pages), I drafted an organization structured data template, incorporating properties that may be helpful for arts organizations specifically.

Aside from the comments initiated already by @fjjulien, the comments are currently providing additional guidance to (potential) users of the template.

@saumier