Overall 'FileFormatShape' is missing

[rcrswld]

Right now, we have defined the file format directly in the SHACL-shape of every data category. This makes it very hard to reuse same file formats across different shapes, like reuse same data formats over different shapes (e.g. OpenSCENARIO for test scenarios as well as for services).

Possible solution:

• Different format-kinds for different data categories (like hd-map, scenarios, etc.)
• Reference to specific format-kind in the overall SHACL-shape category

[rcrswld]

Preferred approach:
Definition of a single file format class with every file formats used in the ecosystem. Additionally, we would propose to further constrain selectable file formats when this general file format shape is referenced within the single shapes of a data category shape.

Example:
`ex:BaseShape

a sh:NodeShape ;    
sh:targetClass ex:MyClass ;
sh:property [
    sh:path ex:myProperty ;
    sh:in ( "Value1" "Value2" "Value3" ) ;
] .`

`ex:ExtendedShape

a sh:NodeShape ;    
sh:targetClass ex:MyClass ;
sh:property [
    sh:path ex:myProperty ;
    sh:in ( "Value1" "Value2" ) ; # Weitere Einschränkung
] ;
sh:node ex:BaseShape .`