Move bitcoin and monero parts into self modules.

cw_bitcoin/lib/bitcoin_wallet.dart

@@ -0,0 +1,63 @@
+import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
+import 'package:cw_core/unspent_coins_info.dart';
+import 'package:hive/hive.dart';
+import 'package:mobx/mobx.dart';
+import 'package:flutter/foundation.dart';
+import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
+import 'package:cw_bitcoin/electrum_wallet_snapshot.dart';
+import 'package:cw_bitcoin/electrum_wallet.dart';
+import 'package:cw_core/wallet_info.dart';
+import 'package:cw_bitcoin/bitcoin_address_record.dart';
+import 'package:cw_bitcoin/electrum_balance.dart';
+import 'package:cw_bitcoin/bitcoin_wallet_addresses.dart';
+
+part 'bitcoin_wallet.g.dart';
+
+class BitcoinWallet = BitcoinWalletBase with _$BitcoinWallet;
+
+abstract class BitcoinWalletBase extends ElectrumWallet with Store {
+  BitcoinWalletBase(
+      {@required String mnemonic,
+      @required String password,
+      @required WalletInfo walletInfo,
+      @required Box<UnspentCoinsInfo> unspentCoinsInfo,
+      List<BitcoinAddressRecord> initialAddresses,
+      ElectrumBalance initialBalance,
+      int accountIndex = 0})
+      : super(
+            mnemonic: mnemonic,
+            password: password,
+            walletInfo: walletInfo,
+            unspentCoinsInfo: unspentCoinsInfo,
+            networkType: bitcoin.bitcoin,
+            initialAddresses: initialAddresses,
+            initialBalance: initialBalance) {
+    walletAddresses = BitcoinWalletAddresses(
+        walletInfo,
+        initialAddresses: initialAddresses,
+        accountIndex: accountIndex,
+        mainHd: hd,
+        sideHd: bitcoin.HDWallet.fromSeed(
+                mnemonicToSeedBytes(mnemonic), network: networkType)
+              .derivePath("m/0'/1"),
+        networkType: networkType);
+  }
+
+  static Future<BitcoinWallet> open({
+    @required String name,
+    @required WalletInfo walletInfo,
+    @required Box<UnspentCoinsInfo> unspentCoinsInfo,
+    @required String password,
+  }) async {
+    final snp = ElectrumWallletSnapshot(name, walletInfo.type, password);
+    await snp.load();
+    return BitcoinWallet(
+        mnemonic: snp.mnemonic,
+        password: password,
+        walletInfo: walletInfo,
+        unspentCoinsInfo: unspentCoinsInfo,
+        initialAddresses: snp.addresses,
+        initialBalance: snp.balance,
+        accountIndex: snp.accountIndex);
+  }
+}