cubicweb-forge #759037 add missing facet to ease finding something related to a project [open]

Quite often when using a cw forge, I want to use a full text search to find a comment or a ticket for a project that I know. The facets enable me to easily restrict the results to tickets and comments, but not on the project which is a primary discriminant criterion IMO.

prioritynormal
typeenhancement
done in<not specified>
closed by<not specified>