async getChatById(chatId) {
        const chat = await this.pupPage.evaluate(async chatId => {
            return await window.WWebJS.getChat(chatId);
        }, chatId);
        return chat
            ? ChatFactory.create(this, chat)
            : undefined;
    }
Gets chat or channel instance by ID
@param {string} chatId 
@returns {Promise<Chat|Channel>}