Copyright for frozenlist source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: frozenlist
Upstream-Contact: Nikolay Kim 
Source: https://github.com/aio-libs/frozenlist

Files: *
Copyright: Nikolay Kim  and Andrew Svetlov 
License: Apache2

Files: debian/*
Copyright: 2021 © Piotr Ożarowski 
License: Apache2

License: Apache2
 See /usr/share/common-licenses/Apache-2.0