[ADD/WIP] Continue MUCwerk

oh man this is gonna be painful to do... xmpp is fine iff youre doing
DMs isnt it?

src/Events.c

@@ -31,3 +31,17 @@ MatrixCreateMessage(char *body)
 
     return map;
 }
+HashMap *
+MatrixCreateNameState(char *name)
+{
+    HashMap *map;
+    if (!name)
+    {
+        return NULL;
+    }
+
+    map = HashMapCreate();
+    HashMapSet(map, "name", JsonValueString(name));
+
+    return map;
+}