Update userinfo embed with muted until

jarvis/cogs/util.py

@@ -253,6 +253,10 @@ class UtilCog(Extension):
             ),
         ]
 
+        if muted:
+            ts = int(user.communication_disabled_until.timestamp())
+            fields.append(EmbedField(name="Muted Until", value=f"<t:{ts}:F> (<t:{ts}:R>)"))
+
         embed = build_embed(
             title="",
             description=user.mention,