[P3] Persist cameras Mongo database with the CAMERAS provisioned

[CESARDELATORRE]

Issue:
When the applications is deleted, you lose the cameras already provisioned (you don't lose the 5G SIMs since they are in the cloud).

Solution:
We need a way to persist these cameras definition so even if you re-deploy the application to a new version, etc. you would still have the cameras deployed. That's important as soon as you have more than 2 cameras....

We can probably persist the MongoDB database into the K8s PersistentVolumes?

Temporal Workaround:
Another temporal workaround (useful in any case even after having the DB persisted) would be a feature to EXPORT/IMPORT the cameras to a .CSV file

[CESARDELATORRE]

Related issue:

#126