Consider adding support for a boolean attribute type

[noah-schechter]

Current Right now, the best way to handle booleans is with a single-select attribute with two values.

Requested Partners have requested a distinct boolean attribute type with a checkbox.

Analysis I think the problem here is not that single select doesn't serve their needs, it's that updating a single-select attribute has a lot of friction if all you're doing is changing a value from true to false. We should consider how to reduce this rather than adding a boolean type at the moment.

@milesmcc If you agree, feel free to close this issue