emojis: add missing emojis

Also add a few common unicode symbols

src/caelestia/data/emojis.txt

@@ -15,6 +15,10 @@
 ¯\_(ツ)_/¯ shrug idk i dont know
 (ง🔥ﾛ🔥)ง person with fire eyes eyes on fire
 ↵ enter key return
+° degrees
+™ tm trademark
+® registered trademark
+© copyright
 😀 grinning face face smile happy joy :D grin
 😃 grinning face with big eyes face happy joy haha :D :) smile funny
 😄 grinning face with smiling eyes face happy joy funny haha laugh like :D :) smile
@@ -56,11 +60,15 @@
 🙄 face with rolling eyes face eyeroll frustrated
 😬 grimacing face face grimace teeth
 🤥 lying face face lie pinocchio
+🫨 shaking face
+🙂‍↔️ head shaking horizontally no
+🙂‍↕️ head shaking vertically yes nod
 😌 relieved face face relaxed phew massage happiness
 😔 pensive face face sad depressed upset
 😪 sleepy face face tired rest nap
 🤤 drooling face face
 😴 sleeping face face tired sleepy night zzz
+🫩 face with bags under eyes baggy eyes
 😷 face with medical mask face sick ill disease
 🤒 face with thermometer sick temperature thermometer cold fever
 🤕 face with head bandage injured clumsy bandage hurt