feat[DOCS] : add useDataTransaction documentation

docs/hooks/useDataTransaction.md

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+---
+sidebar_position: 11
+---
+
+
+# `useDataTransaction`
+
+Use this hook to fetch, process, and monitor blockchain transaction data from Starknet for a specific block number. It calculates various statistics such as transactions per second (TPS), gas prices, average transaction fees in USD, and many more.
+
+---
+
+## Features
+
+- **Automatic Data Fetching**: Automatically fetches data when the hook is used.
+- **TPS Calculation**: Estimates transactions per second based on block timestamps.
+- **Average Fee in USD**: Converts transaction fees from Wei to USD using live ETH price data from CoinGecko.
+- **Gas Price Metrics**: Retrieves L1 gas price information in both Wei and FRI.
+- **Error Handling**: Captures and provides error details if fetching fails.
+
+---
+
+## Usage
+
+This example fetches and monitors data for the specified block, 
+allowing you to display metrics or manage the data fetching state dynamically.
+
+```tsx
+import { useDataTransaction } from "~~/hooks/scaffold-stark/useDataTransaction";
+
+const DataTransaction = ({ blockNumber }: { blockNumber: number }) => {
+  const { blockData, error, refetch, isEnabled, toggleFetching } =
+    useDataTransaction(blockNumber);
+
+  return (
+    <div>
+      {error ? (
+        <p>Error: {error}</p>
+      ) : blockData ? (
+        <>
+          <p>Block Number: {blockData.blockNumber}</p>
+          <p>Transactions: {blockData.transaction}</p>
+          <p>TPS: {blockData.tps}</p>
+          <p>Gas Price (ETH): {blockData.gasprice}</p>
+          <p>Average Fee (USD): {blockData.averageFeeUSD}</p>
+
+        </>
+      ) : (
+        <p>Loading block data...</p>
+      )}
+      <button onClick={toggleFetching}>
+        {isEnabled ? "Pause Fetching" : "Resume Fetching"}
+      </button>
+      <button onClick={refetch}>Refetch Data</button>
+    </div>
+  );
+};
+```
+
+---
+
+## Parameters
+
+- **`blockNumber`**: `number`  
+  The block number for which data should be fetched.
+
+---
+
+## Return Value
+
+The hook returns an object with the following properties:
+
+### 1. `blockData: BlockData | null`
+The processed data for the specified block, including:
+
+- **`transaction`**: Total number of transactions in the block.
+- **`blockStatus`**: Status of the block.
+- **`blockNumber`**: Block number.
+- **`blockHash`**: Block hash.
+- **`blockVersion`**: Starknet version of the block.
+- **`blockTimestamp`**: Timestamp of the block.
+- **`blockTransactions`**: List of transactions in the block.
+- **`parentBlockHash`**: Hash of the parent block.
+- **`totalTransactions`**: Total number of transactions in the block.
+- **`tps`**: Transactions per second (calculated if the previous block exists).
+- **`gasprice`**: Gas price in Wei for L1 transactions.
+- **`gaspricefri`**: Gas price in FRI for L1 transactions.
+- **`timeDiff`**: Time difference (in seconds) between the current block and the previous block.
+- **`averageFeeUSD`**: Average transaction fee in USD.
+
+### 2. `error: string | null`
+An error message if the data fetching fails.
+
+### 3. `refetch: () => void`
+A function to refetch the data.
+
+### 4. `isEnabled: boolean`
+Indicates whether the automatic fetching is enabled.
+
+### 5. `toggleFetching: () => void`
+A function to toggle the automatic fetching of data.
+
+---
+