./bin/lipsum allows to fill up a Phorge instance with bogus data for testing. When creating a project, the code creates a project title, project status, random subscribers/members and picks a random project creator, but does not set a project description.

Make this code also set a project description (which is implemented as a custom field).

Closes T15748

• On the CLI, use ./bin/lipsum generate projects to create a bogus project.
• In the web browser, go to /project/query/all/ and open the project page of the recently created bogus project: See no project description.
• Apply this change.
• On the CLI, use ./bin/lipsum generate projects to create another bogus project.
• In the web browser, go to /project/query/all/ and open the project page of the recently created bogus project: See a random project description.