services: support 0.0.0.0/:: in address options

Previously, client services didn't decode these special INADDR_ANY
addresses and failed to connect.

modules/electrs.nix

@@ -96,7 +96,7 @@ in {
           --daemon-dir='${bitcoind.dataDir}' \
           --electrum-rpc-addr=${cfg.address}:${toString cfg.port} \
           --monitoring-addr=${cfg.address}:${toString cfg.monitoringPort} \
-          --daemon-rpc-addr=${bitcoind.rpc.address}:${toString bitcoind.rpc.port} \
+          --daemon-rpc-addr=${nbLib.addressWithPort bitcoind.rpc.address bitcoind.rpc.port} \
           ${cfg.extraArgs}
         '';
         User = cfg.user;