Add support for Unicdoe 15.1 emojis

Maintains backward compatbility with existing
shortcodes and adds new ones based on the
Unicode CLDR names.

Changelog: added

vendor/unicode/13.0/ReadMe.txt

+# Unicode Emoji
+# © 2020 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see http://www.unicode.org/terms_of_use.html
+
+This directory contains data files for Unicode Emoji, Version 13.0
+
+Public/emoji/13.0/
+
+  emoji-sequences.txt
+  emoji-zwj-sequences.txt
+  emoji-test.txt
+
+The following related files are found in the UCD for Version 13.0
+
+Public/13.0.0/ucd/emoji/
+
+  emoji-data.txt
+  emoji-variation-sequences.txt
+
+For documentation, see UTS #51 Unicode Emoji, Version 13.0

vendor/unicode/14.0/ReadMe.txt

+# Unicode Character Database
+# Date: 2021-08-26, 20:43:00 GMT
+# © 2021 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+
+This directory contains final data files for Unicode, Version 14.0
+
+Public/14.0.0/emoji/
+
+  emoji-data.txt
+  emoji-variation-sequences.txt
+
+The following related files are found in Unicode Emoji, Version 14.0
+
+Public/emoji/14.0/
+
+  emoji-sequences.txt
+  emoji-zwj-sequences.txt
+  emoji-test.txt
+
+For documentation, see UTS #51 Unicode Emoji, Version 14.0

vendor/unicode/15.0/ReadMe.txt

+# Unicode Character Database
+# Date: 2022-08-29, 23:20:20 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+
+This directory contains final data files for Unicode, Version 15.0
+
+Public/15.0.0/emoji/
+
+  emoji-data.txt
+  emoji-variation-sequences.txt
+
+The following related files are found in Unicode Emoji, Version 15.0
+
+Public/emoji/15.0/
+
+  emoji-sequences.txt
+  emoji-zwj-sequences.txt
+  emoji-test.txt
+
+For documentation, see UTS #51 Unicode Emoji, Version 15.0