add new aas repo identifiable profile

[sebbader-sap]

Close #496

[mjacoby]

There are some API calls that have been added/removed according to the proposal at #496 (comment)

✅ get /shells
✅ post /shells
✅ get /shells/{aasIdentifier}
✅ put /shells/{aasIdentifier}
✅ delete /shells/{aasIdentifier}
❌ get /shells/{aasIdentifier}/asset-information
❌ put /shells/{aasIdentifier}/asset-information
✅ get /shells/{aasIdentifier}/asset-information/thumbnail
✅ put /shells/{aasIdentifier}/asset-information/thumbnail
✅ delete /shells/{aasIdentifier}/asset-information/thumbnail
❌ get /shells/{aasIdentifier}/submodel-refs
❌ post /shells/{aasIdentifier}/submodel-refs
❌ delete /shells/{aasIdentifier}/submodel-refs/{submodelIdentifier}
✅ get /shells/{aasIdentifier}/submodels/{submodelIdentifier}
✅ put /shells/{aasIdentifier}/submodels/{submodelIdentifier}
✅ delete /shells/{aasIdentifier}/submodels/{submodelIdentifier}
🆕 get /shells/{aasIdentifier}/submodels/{submodelIdentifier}/submodel-elements/{idShortPath}/attachment
🆕 put /shells/{aasIdentifier}/submodels/{submodelIdentifier}/submodel-elements/{idShortPath}/attachment
🆕 delete /shells/{aasIdentifier}/submodels/{submodelIdentifier}/submodel-elements/{idShortPath}/attachment

What is the motivation for these deviations?
At first glance, I do not see any reason to not include the calls to /shells/{aasIdentifier}/asset-information and /shells/{aasIdentifier}/submodel-refs.

Regarding the calls to /shells/{aasIdentifier}/submodels/{submodelIdentifier}/submodel-elements/{idShortPath}/attachment I think I understand the intention, as without them no access to the files is possible at all. However, this feels like breaking the intention of the profile that no submodel element-level access should be supported. An alternative would be to add the serialization interface (which could be limited to AASX format) which then would enable access to files.

[BirgitBoss]

inconsistency

in the .yaml there are also contained but not listed here in text:

GetAllAssetAdministrationShells

Not contained in .yaml:
PostSubmodel

[BirgitBoss]

why only Content "Normal", "Value" also and also the other formats, no?