feat(deployment): Regular DB clean-up

[dorneanu]

Task Description

This task should make that regular scans can take place. Therefore we need to make sure that the DB is clean before the scanners run.

Acceptance Criteria:

• Whole tables are truncated
• Whole db is truncated

Expected Test:
Add any information about how this will be tested.

[dorneanu]

As an alternative to custom SQL statement running regularly we could also use: https://mariadb.com/kb/en/event-scheduler/
We also discussed to have an idempotent behaviour in Heureka where

• whenever the same data for an entity is the same, we want to to give back the already existing entity

This would also help with error management.