Set up PeerSwap

Allows to swap sats in and out of Lightning channels without a 3rd party
(and their fees). Instead, swaps can be initiated directly with the
channel peer.

https://www.peerswap.dev/

site-cookbooks/kosmos-bitcoin/templates/peerswap-lnd.conf.erb

@@ -0,0 +1,3 @@
+<% @config.each do |k, v| %>
+<%= "lnd.#{k}=#{v}" %>
+<% end %>