finish separation between plugins and GUIs

plugins/ledger/__init__.py

@@ -0,0 +1,8 @@
+from electrum.i18n import _
+
+fullname = 'Ledger Wallet'
+description = 'Provides support for Ledger hardware wallet'
+requires = [('btchip', 'github.com/ledgerhq/btchip-python')]
+requires_wallet_type = ['btchip']
+registers_wallet_type = ('hardware', 'btchip', _("Ledger wallet"))
+available_for = ['qt', 'cmdline']