Copyright for libokhttp-signpost-java source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: OkHttp Signpost
Source: http://github.com/pakerfeldt/okhttp-signpost/

Files: *
Copyright: 2021, Patrik Åkerfeldt 
License: Apache-2.0

Files: debian/*
Copyright: 2021, Markus Koschany 
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'