Support projection argument #67
Description
From https://github.com/DSpace/RestContract/blob/main/projections.md
"All GET requests returning a HAL document support an optional projection argument, specifying the name of an alternative representation of the requested resource.
Projections may add to, modify, or omit information from the default representation of a resource."
Projections are listed in https://github.com/DSpace/DSpace/tree/main/dspace-server-webapp/src/main/java/org/dspace/app/rest/projection
For example, we would need the allLanguages projection to fetch translations of community titles, e.g.
As far as I see, the client.py methods currently only support embeds.