Release/1.6.0

[wow-such-code]

• add function to search for different files found in datasets
• implement the listing of datasets given sample codes
• change build system to github actions
• add datastore server API
• use new changelog style

[jenniferboedker]

@wow-such-code is this still up to date? You did not request a review here

[wow-such-code]

@wow-such-code is this still up to date? You did not request a review here

I think I talked to @sven1103 about this, but we forgot. It is still up to date and needed sooner or later, but conflicts need to be solved.

[KochTobi]

included in #49