Generate PDF with the labels for the parcels

Users will need to stick the labels of each parcel before sending the shipment. Today, we can use as model for inspiration the ones used for MX: parcel_312234__2_.pdf

The API should implement a method with the next signature:

This can be already be found on local branch issue_130:

https://gitlab.esrf.fr/demariaa/icat-plus/-/tree/issue_130

The generation of the PDF can be similar to the one done for the elogbook. Given an HTML it produces a PDF. This PDF should contain a QRcode that then will be scanned

We don't know the details but all information should be parameterized and we can envisage different formats depending on the type of parcel to be sent. Example: I can imagine that the next message will only appear in frozen samples

Obviously, we can expect for now mock data, ideally taken from the database and then we will distribute for feedback.