Merge branch '21-trigger-new-tag-creation' into 'master'

Resolve "Trigger new tag creation"

Closes #21

See merge request muni-kypo-crp/frontend-angular/models/kypo2-angular-topology-model!25

VERSION.txt

-12.0.3 Add new node of "special" type (for non-host nodes)
+12.0.3 Add new node of "special" type (for internet nodes)
 12.0.2 Update gitlab CI