Purchase USDC Credits Package via Gifu

Purchase prepaid credits on the Gifu platform using USDC on Base network. This endpoint allows users to buy credit packages (10 credits for 1 USDC) by providing their wallet address, enabling payment-gated access to Gifu's services. | Input: Requires a user's wallet address to process the credit purchase | Output: Returns confirmation of purchase success, the number of credits received (10), package details (ID and price in USDC), and a success boolean | Use cases: I want to buy credits to access Gifu's payment-gated APIs; Purchase a 10-credit package for 1 USDC on Base; Load my wallet with prepaid credits for API usage; Get credit package details and complete a purchase transaction | Cost: 1 USDC on base