Add missing emoji.txt for cats pack

static/emoji/cats/emoji.txt

@@ -0,0 +1,27 @@
+cat_attack, /emoji/cats/cat_attack.gif
+cat_bite, /emoji/cats/cat_bite.gif
+cat_boop, /emoji/cats/cat_boop.gif
+cat_clown, /emoji/cats/cat_clown.png
+cat_dance, /emoji/cats/cat_dance.gif
+catdance, /emoji/cats/catdance.gif
+cate, /emoji/cats/cate.png
+catJAM, /emoji/cats/catJAM.gif
+cat_meow, /emoji/cats/cat_meow.gif
+cat_no, /emoji/cats/cat_no.gif
+cat_stare, /emoji/cats/cat_stare.gif
+catto, /emoji/cats/catto.png
+cat_wink, /emoji/cats/cat_wink.png
+cringingcat, /emoji/cats/cringingcat.png
+happycat, /emoji/cats/happycat.png
+maxwell, /emoji/cats/maxwell.gif
+politecat, /emoji/cats/politecat.png
+postthiscat, /emoji/cats/postthiscat.png
+rock, /emoji/cats/rock.gif
+sadcat, /emoji/cats/sadcat.png
+saddercat, /emoji/cats/saddercat.png
+scremcat, /emoji/cats/scremcat.png
+sillyahh, /emoji/cats/sillyahh.png
+smugcat, /emoji/cats/smugcat.png
+spookycat, /emoji/cats/spookycat.png
+vibecat, /emoji/cats/vibecat.gif
+woaa, /emoji/cats/woaa.gif