perf: add bip39 support (same as MyTonWallet and TonKeeper)

[aitimate]

// usage
wallet.FromSeed(nil, <seed>, version, true)

func FromSeed(api TonAPI, seed []string, version VersionConfig, isCompatBip39 ...bool) (*Wallet, error) {
	return FromSeedWithPassword(api, seed, "", version, isCompatBip39...)
}

func FromSeedWithPassword(api TonAPI, seed []string, password string, version VersionConfig, isCompatBip39 ...bool) (*Wallet, error) {
	// validate seed
	if len(seed) < 12 {
		return nil, fmt.Errorf("seed should have at least 12 words")
	}
	for _, s := range seed {
		if !words[s] {
			return nil, fmt.Errorf("unknown word '%seedBytes' in seed", s)
		}
	}
	seedBytes := []byte(strings.Join(seed, " "))
	mac := hmac.New(sha512.New, seedBytes)
	mac.Write([]byte(password))
	hash := mac.Sum(nil)

	if len(password) > 0 {
		p := pbkdf2.Key(hash, []byte(_PasswordSalt), 1, 1, sha512.New)
		if p[0] != 1 {
			// compat big39
			if len(isCompatBip39) > 0 && isCompatBip39[0] {
				pKey := pbkdf2.Key(seedBytes, []byte("mnemonic"+password), 2048, 64, sha512.New)
				dk, err := hdwallet.Derived(_Path, pKey)
				if err != nil {
					return nil, err
				}
				return FromPrivateKey(nil, ed25519.NewKeyFromSeed(dk.PrivateKey), version)
			}
			return nil, errors.New("invalid seed")
		}
	} else {
		p := pbkdf2.Key(hash, []byte(_BasicSalt), _Iterations/256, 1, sha512.New)
		if p[0] != 0 {
			// compat big39
			if len(isCompatBip39) > 0 && isCompatBip39[0] {
				pKey := pbkdf2.Key(seedBytes, []byte("mnemonic"), 2048, 64, sha512.New)
				dk, err := hdwallet.Derived(_Path, pKey)
				if err != nil {
					return nil, err
				}
				return FromPrivateKey(nil, ed25519.NewKeyFromSeed(dk.PrivateKey), version)
			}
			return nil, errors.New("invalid seed")
		}
	}

	k := pbkdf2.Key(hash, []byte(_Salt), _Iterations, 32, sha512.New)

	return FromPrivateKey(api, ed25519.NewKeyFromSeed(k), version)
}

[aitimate]

#274