Define the preferred way to reference source code repositories

[sandervd]

ADMS-AP is very centered around the assumption that binary code will be distributed. However, open source software is mostly maintained in open access repositories (e.g. GitHub, GitLab etc.). The documentation of ADMS-AP doesn't define how to reference a source code repository. Some potential approaches I see:

• Add a dedicated property to the asset class
• Add 'repository' to range of dcat:mediaType on Asset Distribution. (my preferred option)

[sandervd]

Until this issue is discussed, Joinup will implement it in the following way: A custom application specific predicate on the asset class will point to the project page on the source code platform.