feat[DOCS] : add useNativeCurrencyPrice documentations

docs/hooks/useNativeCurrencyPrice.md

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+---
+sidebar_position: 13
+---
+
+
+# useNativeCurrencyPrice
+
+Use this hook to fetch and manage the prices of the native currency and the STRK token. The prices are stored in the global state and updated through the `priceService`.
+
+```ts
+useNativeCurrencyPrice();
+```
+
+## Usage Example
+
+This example demonstrates how to use the `useNativeCurrencyPrice` hook to fetch and display the native and STRK currency prices. The prices are accessed from the global state.
+
+```tsx
+import React from "react";
+import { useNativeCurrencyPrice } from "~~/hooks/scaffold-stark/useNativeCurrencyPrice";
+import { useGlobalState } from "~~/services/store/store";
+
+const PriceDisplay = () => {
+  const nativeCurrencyPrice = useGlobalState((state) => state.nativeCurrencyPrice);
+  const strkCurrencyPrice = useGlobalState((state) => state.strkCurrencyPrice);
+
+  // Initiate price fetching
+  useNativeCurrencyPrice();
+
+  return (
+    <div>
+      <p>Native Currency Price: {nativeCurrencyPrice ?? "Loading..."}</p>
+      <p>STRK Currency Price: {strkCurrencyPrice ?? "Loading..."}</p>
+    </div>
+  );
+};
+
+export default PriceDisplay;
+```
+
+---
+
+## Configuration
+
+No parameters are required for this hook. It automatically initiates price polling using the `priceService`.
+
+
+## Return Values
+
+This hook doesn’t return any values directly but updates the global state.
+
+| Global State Field         | Type      | Description                                 |
+| :------------------------- | :-------  | :------------------------------------------ |
+| **nativeCurrencyPrice**    | `number`  | The current price of the native currency.   |
+| **strkCurrencyPrice**      | `number`  | The current price of the STRK token.        |
+
+
+--- 
+
+## Polling Behavior  
+
+This hook starts a price polling session when it is initialized and stops the polling when the component using it is unmounted. It uses a unique polling ID for the session.  
+
+| Field          | Type       | Description                                            |  
+| :------------- | :--------- | :----------------------------------------------------- |  
+| **Polling ID** | `string`   | A unique identifier for the polling session.           |  
+
+--- 
+
+## Best Practices
+
+- Use this hook in components where you need to display live price updates for the native and STRK currencies.
+- Ensure that the `priceService` is properly configured and the global state is initialized.
+- Handle loading and fallback states to improve the user experience.
+
+---
+
+## Error Handling
+
+This hook relies on `priceService` for price updates. Any errors during polling will need to be handled within the `priceService` implementation. To gracefully handle errors in your components:
+
+```tsx
+const nativeCurrencyPrice = useGlobalState((state) => state.nativeCurrencyPrice);
+const strkCurrencyPrice = useGlobalState((state) => state.strkCurrencyPrice);
+
+if (!nativeCurrencyPrice || !strkCurrencyPrice) {
+  return <div>Failed to fetch prices or still loading...</div>;
+}
+```
+
+