add chat :p

types/chat.d.ts

@@ -0,0 +1,31 @@
+interface ChatMessage {
+	id: string;
+	username: string;
+	message: string;
+	timestamp: number;
+	streamId: string;
+}
+
+interface WebSocketMessage {
+	type: "join_chat" | "send_message" | "leave_chat" | "load_history";
+	streamId?: string;
+	username?: string;
+	message?: string;
+}
+
+interface WebSocketResponse {
+	type:
+		| "chat_message"
+		| "chat_history"
+		| "user_joined"
+		| "user_left"
+		| "error"
+		| "connected";
+	data?: any;
+	error?: string;
+}
+
+interface UserInfo {
+	streamId?: string | undefined;
+	username?: string | undefined;
+}