Make CRDs typed

At the moment, we use non typed CRDs. It would be nice to make the CRDs typed, for that we should introduce structural schema

added Nice To Have label

changed the description

added Master Project 20/21 Theodolite Kotlin modul/theodolite labels

mentioned in merge request !106 (merged)

removed Master Project 20/21 label

added In Progress label and removed Nice To Have label

assigned to @wetzel

mentioned in issue #223 (closed)

mentioned in merge request !142 (merged)

closed

removed In Progress label