Add emoji exclusions file

This file is used by fontchain_linter. The file is added for temporary
font drops. When the final font is dropped the file should be emptied
to verify that emoji font complies with Unicode data files.

Test: m fontchain_lint
Bug: 77148691
Change-Id: Id042fe843a96dc1e2bc2de37010ad73716ee2fee
(cherry picked from commit 5a2341bffab2daeab98af96429e81f5a465357d2)
Merged-In: Id042fe843a96dc1e2bc2de37010ad73716ee2fee
Merged-In: I0ddf0ba2dde3a27ff368441c7c2a2e5fc111c856
Merged-In: I437c7e31f0946bcfeab794215a266cf3b0b9552f
diff --git a/additions/emoji-exclusions.txt b/additions/emoji-exclusions.txt
new file mode 100644
index 0000000..6f6d6c3
--- /dev/null
+++ b/additions/emoji-exclusions.txt
@@ -0,0 +1,10 @@
+# © 2018 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
+
+# Note: this file is not published by Unicode, but since its format follows Unicode's format, it's
+# basically derived from Unicode data files.
+
+# Should be an empty file, used for temporary non-final emoji font drops.
+# ex:
+#1F9B9 1F3FB                             ; Emoji_Modifier_Sequence   ; supervillain: light skin tone
\ No newline at end of file