docs: Add documentation for chat window default open and chat history hook

Author: tjtanjin

docs/api/hooks.md

@@ -83,6 +83,7 @@ Below is a list of available hooks along with a brief description for each of th
 | Name                | Description                                                                             |
 | ------------------- | --------------------------------------------------------------------------------------- |
 | useAudio            | Manages audio functionalities, such as toggling audio on or off.                        |
+| useChatHistory      | Handles loading, retrieving and setting of chat history messages.                       |
 | useChatWindow       | Manages the state of the chatbot window (open/close).                                   |
 | useFirstInteraction | Detects and tracks the user's first interaction with the chatbot.                       |
 | useFlow             | Allows getting and restarting chatbot flow and tracks if flow has started.              |
@@ -125,6 +126,31 @@ const MyNestedComponent = () => {
 };
 ```
 
+### useChatHistory
+
+#### Description
+The `useChatHistory` hook allows you to show, retrieve and set chat history messages.
+
+#### Return Values
+| Name                | Type       | Description                                                   |
+| ------------------- | ---------- | ------------------------------------------------------------- |
+| showChatHistory     | `function` | Shows the chat history messages on the chatbot.               |
+| getHistoryMessages  | `function` | Retrieves the chat history messages.                          |
+| setHistoryMessages  | `function` | Sets the chat history messages (note that this is permanent). |
+
+#### Code Example
+```jsx
+import { useChatHistory } from "react-chatbotify";
+
+const MyNestedComponent = () => {
+  const { showChatHistory } = useChatHistory();
+
+  return (
+    <button onClick={showChatHistory}></button>
+  )
+};
+```
+
 ### useChatWindow
 
 #### Description

docs/api/settings.md

@@ -269,7 +269,7 @@ Properties here handle the UI/UX in the chat window. Note that it is recommended
 | showMessagePrompt          | `boolean`                         | true                                        | Specifies whether to show a message prompt when new messages are received while a user is scrolling the window.                                                      |
 | messagePromptText          | `string`                          | "New Messages ↓"                            | The text to be displayed on the message prompt shown.                                                                             |
 | messagePromptOffset        | `number`                          | 30                                          | The offset (in pixels) that the user must be from the bottom of the chat window to be considered scrolling and thus see the message prompt (recommended to keep at `30` or higher).                                                                  |
-| defaultOpen        | `boolean`                          | false                                          | Specifies whether the chat window should be open by default.                                                                  |
+| defaultOpen        | `boolean`                          | false                                          | Specifies whether the chat window should be open by default (ignored if chatbot is embedded).                                                                  |
 
 ### chatHistory