Add FAQ to manpage, add sticker and custom emoji Q&A

man/nheko.1.adoc.in

@@ -38,6 +38,27 @@ Creates a unique profile, which allows you to log into several accounts at the
 same time and start multiple instances of nheko. Use _default_ to start with the
 default profile.
 
+== FAQ
+
+=== How do I add stickers and custom emojis?
+
+Stickers and custom emojis are organized in image packs. There is one user image
+pack that only your account has access to and there are room image packs that
+are accessible by everyone in the room they are defined in. You can activate a
+room image pack globally to use it in any room.
+
+To manage image packs in nheko, go to the room settings and enter the Sticker &
+Emote Settings. You will see the Private pack (your user image pack) and can
+edit it there. The Shortcode is a unique identifier you use to select the image
+with and the Body is the alternate text that is displayed on clients that don't
+support images (like the alt tag in HTML images).
+
+If you have the necessary permissions you can create new room packs with the
+button at the bottom of the image pack list. They are the same as the user pack
+but you can create as many as you want and everyone in the room can use them. It
+might be a good idea to create an extra room just for your image packs to make
+sharing easier.
+
 == COMPLETERS
 
 Completers spawn a popup with completion candidates when you type them in