Add a server notebook template for viewing recent flows

[misje]

This notebook is handy for getting an overview of recently scheduled flows/collections, either for auditing reasons or just as a handy way to find a recent collection.

[misje]

Probably blocked by #879.

[misje]

I have run the import, verified that the zip contains this artifact, but it does not show up in velociraptor. No errors either.

[misje]

Is there perhaps some missing logic needed for imports of notebook artifacts, since this is a new feature and this is the first of its kind?

[scudette]

It should be there?

[misje]

It's not listed in Results either.

[scudette]

I was able to import it manually and after removing the exchange prefix