refactor: Move all coin interfaces to a dir

basicswap/interface/passthrough_btc.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2021 tecnovert
+# Distributed under the MIT software license, see the accompanying
+# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
+
+from .btc import BTCInterface
+from basicswap.contrib.test_framework.messages import (
+    CTxOut)
+
+
+class PassthroughBTCInterface(BTCInterface):
+    def __init__(self, coin_settings, network):
+        super().__init__(coin_settings, network)
+        self.txoType = CTxOut
+        self._network = network
+        self.blocks_confirmed = coin_settings['blocks_confirmed']
+        self.setConfTarget(coin_settings['conf_target'])