[MOD] Mess a bit with rich replies, add XEPS-TBD

This should be a nice list of future XEPs to be implemented, so that I
can keep track of these without having to keep all of these in my head.

src/AS.c

@@ -289,6 +289,37 @@ ASSetName(const ParseeConfig *conf, char *user, char *name)
     JsonFree(json);
     Free(user);
 }
+HashMap *
+ASFind(const ParseeConfig *c, char *room, char *event)
+{
+    HttpClientContext *ctx = NULL;
+    HashMap *json;
+    char *path, *user;
+    if (!c || !room || !event)
+    {
+        return NULL;
+    }
+
+    user = StrConcat(4, "@", c->sender_localpart, ":", c->homeserver_host);
+    path = StrConcat(7, 
+        "/_matrix/client/v3/rooms/",
+        room, "/event/", event, "?",
+        "user_id=", user
+    );
+
+    ctx = ParseeCreateRequest(c, HTTP_GET, path);
+    Free(path);
+    ASAuthenticateRequest(c, ctx);
+    HttpRequestSendHeaders(ctx);
+    HttpRequestSend(ctx);
+
+    json = JsonDecode(HttpClientStream(ctx));
+        
+    HttpClientContextFree(ctx);
+    Free(user);
+
+    return json;
+}
 char *
 ASGetName(const ParseeConfig *c, char *room, char *user)
 {