Copyright for fcitx5-gb18030 source package in Yangtze V1.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: fcitx5-gb18030
Source: 
#
# Please double check copyright with the licensecheck(1) command.

Files:     .clang-format
           .gitignore
           .vscode/settings.json
           CMakeLists.txt
           src/CMakeLists.txt
           src/gb18030-addon.conf.in.in
           src/gb18030.conf.in
           src/gb18030.cpp
           src/gb18030.h
Copyright: __NO_COPYRIGHT_NOR_LICENSE__
License:   __NO_COPYRIGHT_NOR_LICENSE__

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# Files marked as NO_LICENSE_TEXT_FOUND may be covered by the following
# license/copyright files.