Add GitHub and Software

[zubeydecivelek]

After VCS module deployed to prod, we should add a documentation for how it can be used.

You can check zenodo docs for reference: https://help.zenodo.org/docs/github/

[palkerecsenyi]

FYI this is in backlog until we deploy VCS to prod, since some of the features might get slight adjustments following user testing.

[palkerecsenyi]

https://github.com/CERNDocumentServer/docs-cds-rdm/pull/12/changes#r3064102550 Add link here when ready