Distributed packages with `Status` not set to `accepted` or `deposited`

[fingolfin]

Several packages in the package distribution have a status other than accepted or deposited, which we should probably change.

Status dev:

• [x] datastructures -- fix released in v0.2.7
• [x] JupyterViz -- already fixed in git, needs a release
• [ ] MajoranaAlgebras -- see https://github.com/MWhybrow92/MajoranaAlgebras/pull/49
• [x] RepnDecomp -- fix released in v1.2.1
• [x] Thelma -- fix released in v1.3
• [x] uuid -- fix released in v0.7
• [x] walrus -- fix released in v0.9991

Status other:

• [ ] AGT -- see https://github.com/gap-packages/agt/pull/12

In the future, we should perhaps enforce this for packages to be distributed (see this issue).

[fingolfin]

All in all I think we should perhaps just drop these fields, and instead collect this information in a central place. After all, it should not be up to package authors to decide if their packages are distributed/accepted/etc. (just like Autoload in PackageInfo.g didn't make sense and we dropped it)