KnowSwhidFilterProvenance: add a `filter_licenses` config option
Make it possible to enable or disable filtering license files via a
filter_licenses config option.
Also add a few more license files in the list of know license swhids.
Staging instance, all changes can be removed at any time
Make it possible to enable or disable filtering license files via a
filter_licenses config option.
Also add a few more license files in the list of know license swhids.