[orgs] Add organizationId to workspace

[svenefftinge]

We want workspaces to be owned by organizations, so we are introducing a reference on the workspace entity.

I'm running this in the following steps:

• alter the schema ([db] d_b_workspace get organizationId #16192)
• enhance the code so that new workspaces get an organizationId set ([server] set organizationid on workspace creation #16261)
• run a migration that updates workspaces in the past ([db] long running migration for filling the organizationid in workspaces #16269)