Copyright for unicode-data source package in Yangtze V1.0

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

Files:     ReadMe.txt
           emoji/ReadMe.txt
           emoji/emoji-sequences.txt
           emoji/emoji-test.txt
           emoji/emoji-zwj-sequences.txt
Copyright: 2021 Unicode®, Inc.
License:   __UNKNOWN__
 Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.

Files:     decomps.txt
Copyright: 2021 Unicode, Inc.
License:   __NO_LICENSE__

#----------------------------------------------------------------------------
# huge files   (skipped):
#         UCD.zip
#         Unihan.zip
#         allkeys.txt

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