`DataspaceProfile` and `DataspaceProfileContext`

# Feature Request

At the moment there are two classes that are doing pretty much the same thing (describing a dataspace profile): `DataspaceProfile` and `DataspaceProfileContext`.
They could be merged toghether

## Which Areas Would Be Affected?

_e.g., DPF, CI, build, transfer, etc._

## Why Is the Feature Desired?

avoid duplication

## Who will sponsor this feature?

_Please @-mention the committer that will sponsor your feature_.

## Solution Proposal

_If possible, provide a (brief!) solution proposal._

Locate the definitions of DataspaceProfile and DataspaceProfileContext, then trace their usages to compare their responsibilities and identify compatibility constraints. Review the existing tests around those classes if present. Done means one unified profile representation replaces the duplicated responsibilities without breaking current usages.

Written by the indexing model from the issue text.