Add https://github.com/fkie-cad/nvd-json-data-feeds

[h5b]

Add https://github.com/fkie-cad/nvd-json-data-feeds which is besides cvelistv5 the second JSON data feed used by newer LTS releases starting with wrynose.

[h5b]

Destination has been set-up: https://github.com/jhnc-oss/nvd-json-data-feeds