Update Stream Chat docs with latest code and instructions

[Gautam25Raj]

Description:

The current code examples in Stream Chat documentation section within the Push Protocol repository appear to be outdated, and I'd like to contribute a revised version that aligns with the latest Stream Chat integration practices.

Specific areas for update:

• Code snippets: The code examples in the docs should be replaced with the most up-to-date syntax and best practices for integrating Stream Chat with Push Protocol.

Proposed code changes:

// Initialize stream to listen for events:
const stream = await userAlice.initStream(
  [
    CONSTANTS.STREAM.CHAT, // Listen for chat messages
    CONSTANTS.STREAM.NOTIF, // Listen for notifications
    CONSTANTS.STREAM.CONNECT, // Listen for connection events
    CONSTANTS.STREAM.DISCONNECT, // Listen for disconnection events
  ],
  {
    // Filter options:
    filter: {
      // **Listen to all channels and chats (default):**
      channels: ["*"],
      chats: ["*"],

      // **Listen to specific channels and chats:**
      // channels: ['channel-id-1', 'channel-id-2'],
      // chats: ['chat-id-1', 'chat-id-2'],

      // **Listen to events with a specific recipient:**
      // recipient: '0x...' (replace with recipient wallet address)
    },

    // Connection options:
    connection: {
      retries: 3, // Retry connection 3 times if it fails
    },

    raw: false, // Receive events in structured format
  }
);

// Chat event listeners:

// Stream connection established:
stream.on(CONSTANTS.STREAM.CONNECT, async (a) => {
  console.log("Stream Connected");

  // Send initial message to PushAI Bot:
  console.log("Sending message to PushAI Bot");

  await userAlice.chat.send(pushAIWalletAddress, {
    content: "Hello, from Alice",
    type: "Text",
  });

  console.log("Message sent to PushAI Bot");
});

// Chat message received:
stream.on(CONSTANTS.STREAM.CHAT, (message) => {
  console.log("Encrypted Message Received");
  console.log(message); // Log the message payload
});

// Chat operation received:
stream.on(CONSTANTS.STREAM.CHAT_OPS, (data) => {
  console.log("Chat operation received.");
  console.log(data); // Log the chat operation data
});

// Connect the stream:
await stream.connect(); // Establish the connection after setting up listeners

// Stream disconnection:
stream.on(CONSTANTS.STREAM.DISCONNECT, () => {
  console.log("Stream Disconnected");
});