add example for creating one address

test/one_address/main.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/crypto"
+	common2 "github.com/harmony-one/harmony/internal/common"
+)
+
+func main() {
+	// Create an account
+	key, _ := crypto.GenerateKey()
+
+	// Get the address
+	address := crypto.PubkeyToAddress(key.PublicKey)
+	// 0x8ee3333cDE801ceE9471ADf23370c48b011f82a6
+
+	// Get the private key
+	privateKey := hex.EncodeToString(key.D.Bytes())
+	// 05b14254a1d0c77a49eae3bdf080f926a2df17d8e2ebdf7af941ea001481e57f
+
+	fmt.Printf("account: %s\n", common2.MustAddressToBech32(address))
+	fmt.Printf("private Key : %s\n", privateKey)
+}