Create crypto deposit request

  ## 🔄 Complete Crypto Deposit Flow
  
  ### Prerequisites
  **IMPORTANT:** You must create a crypto wallet for each the specifi chain in test before using this endpoint.
  
  
  ### Customer Action Required
  After calling this endpoint, instruct your customer to send **exactly** the specified amount of the token on the given chain to the returned `integrator_wallet_address`.
  
  ### Real-time Detection
  - Transaction detected within 1-2 minutes
  - Automatic confirmation tracking
  - Status updates sent to your callback_url when confirmations are met
  
  ### Callback Example
  When the transaction is confirmed, you'll receive:
  ```json
  {
    "id": "68e61c25aa1eded97317154b",
    "status": "SUCCESSFUL",
    "amount": 100.5,
    "transaction_hash": "0xe55b003df...",
    "confirmations": 15,
    "reference_id": "your_ref_123"
  }
  ```
  
  ### Supported Chains & Tokens
  - **ETHEREUM**: USDC, USDT
  - **POLYGON**: USDC, USDT  
  - **BASE**: USDC, USDT
  - **ARBITRUM**: USDC
  - **OPTIMISM**: USDC
  - **AVALANCHE**: USDC
  - **CELO**: CUSD, USDC,