Populate main branch with initial commit (Release 0)

The Release 0 should target the code as it was during the initial commit from GitHub migration.

changed milestone to %ETSI Migration Readiness

added statusin progress typeenhancement labels

assigned to @ktrantzas

added to epic &12 (closed)

mentioned in commit 6886f66e

removed statusin progress label

added statusunder review label

closed

removed statusunder review label