Add ability to select affected products for analysis data propagation

[tdruez]

This is an implementation of #105

[tdruez]

This PR introduces a new "Propagate analysis to products:" section in the "Vulnerability analysis" modal.
The list of Products containing the same package as the one currently being analysed are listed and can be selected for "analysis propagation".

When checked, all the Analysis data (status, justification, responses, detail) will be create in the context of that other Product.
Note that if no other Product contains this package, the section is not displayed.
Also, updates are not yet supported, the analysis is propagated only if not analysis is available yet on the target Product. This is to avoid providing an easy way to "destroy" data.

@DennisClark Let me know your thoughs on the current implementation and how you would like to handle the "update" cases.

[DennisClark]

@tdruez Very nice feature, confirmed working in Staging Starship.

Regarding updates, I think it might be useful to display the Analysis State of the package vulnerability on each potential target product and let the user decide whether to check that product, and if so proceed with an update.

[tdruez]

@DennisClark The "Propagate to product" field is now displayed as a table including the current Analysis values when available. This will help the user to make a conscious decision about propagating to others Product.

It provides also a good overview of the current state of a given vulnerability across Products (see also #104)

The "select-all" feature is available to propagate to all affected Products.

Update when selecting a Product for propagation is now supported.

[DennisClark]

@tdruez Confirmed the latest improvements in Staging Starship. The updates get propagated properly and the presentation of the related products is very nice. No problems found.