Copyright for super-csv source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: Super CSV
Source: https://github.com/super-csv/super-csv

Files: *
Copyright: 2007 Kasper B. Graversen
License: Apache-2.0

Files: debian/*
Copyright: 2018, Jochen Sprickerhof 
License: Apache-2.0

License: Apache-2.0
 On Debian systems, the full text of the Apache-2.0 license
 can be found in the file '/usr/share/common-licenses/Apache-2.0'