cve: added cve.circl.lu to our cve link collection
cve: added cve.circl.lu to our cve link collection

cve.circl.lu is hosted by the CERT of luxembourg.
They provide a full JSON API for receiving CVEs from multiple feeds
like:

* NIST National Vulnerability Database
* Common Platform Enumeration (CPE)
* Common Weakness Enumeration (CWE)
* CIRCL incident statistics and threat ranking
* toolswatch/vFeed

jelly/arch-security-tracker,jelly/arch-security-tracker,archlinux/arch-security-tracker,anthraxx/arch-security-tracker,anthraxx/arch-security-tracker,archlinux/arch-security-tracker,anthraxx/arch-security-tracker