feat: refactor payment system with multi-currency support and TRX native transfer detection

- Add multi-currency exchange rate API integration (GetRateForCoin)
 - Implement native TRX transfer detection alongside TRC20 USDT transfers
 - Replace deprecated Tronscan API with Trongrid API for better reliability
 - Add TRON Grid API key configuration support
 - Refactor order service to support multiple tokens and currencies
 - Update wallet address locking/unlocking to track token type
 - Add base58 and gjson dependencies for crypto operations
 - Optimize SQLite connection with WAL mode and busy timeout
 - Remove deprecated USDT rate job (replaced by dynamic rate API)
 - Update order data model to include currency and receive address fields
 - Enhance TRC20 callback with improved error handling and logging

src/crypto/tron.go

@@ -0,0 +1,30 @@
+package crypto
+
+import (
+	"crypto/sha256"
+
+	"github.com/shengdoushi/base58"
+)
+
+const AddressLength = 20
+const PrefixMainnet = 0x41
+
+// Encode returns the Base58 encoding of input using the Bitcoin alphabet.
+func Encode(input []byte) string {
+	return base58.Encode(input, base58.BitcoinAlphabet)
+}
+
+// EncodeCheck returns the Base58Check encoding of input (Base58 with a 4-byte SHA-256d checksum).
+func EncodeCheck(input []byte) string {
+	h256h0 := sha256.New()
+	h256h0.Write(input)
+	h0 := h256h0.Sum(nil)
+
+	h256h1 := sha256.New()
+	h256h1.Write(h0)
+	h1 := h256h1.Sum(nil)
+
+	inputCheck := append(append([]byte(nil), input...), h1[:4]...)
+
+	return Encode(inputCheck)
+}