spark-wallet: add netns

- Adds spark-wallet to netns-isolation.services
- Adds extraArgs option to allow using spark-wallet with network
  namespaces
- Adds host option (defaults to localhost) as target of hidden service
- Adds enforceTor option to bring in line with other services

modules/netns-isolation.nix

@@ -105,6 +105,11 @@ in {
           connections = [ "bitcoind" ]
           ++ ( optionals config.services.electrs.TLSProxy.enable [ "nginx" ]);
         };
+        spark-wallet = {
+          id = 17;
+          # communicates with clightning over lightning-rpc socket
+          connections = [];
+        };
       };
 
       systemd.services = {
@@ -252,6 +257,12 @@ in {
         daemonrpc = "${netns.bitcoind.address}:${toString config.services.bitcoind.rpc.port}";
       };
 
+      # spark-wallet: Custom netns configs
+      services.spark-wallet = mkIf config.services.spark-wallet.enable {
+        host = netns.spark-wallet.address;
+        extraArgs = "--no-tls";
+      };
+
     })
     # Custom netns config option values if netns-isolation not enabled
     (mkIf (!cfg.enable) {