Generate correct names for SubmodelElementCollections

[atextor]

Description

When translating from SAMM to AAS, Properties pointing to Entities would lead to
SubmodelElementCollections named like the Entities. They should be named like
the Properties instead.

Fixes #578

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

[Yauhenikapl]

LGTM!

[github-actions]

Release v2.8.0 addresses this.