rP179f866deb74

Make lipsum project generator also fill in project description

Summary:
`./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

Test Plan:
* On the CLI, use `./bin/lipsum generate projects` to create a…