lightning-charge: add netns

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

modules/netns-isolation.nix

@@ -110,6 +110,11 @@ in {
           # communicates with clightning over lightning-rpc socket
           connections = [];
         };
+        lightning-charge = {
+          id = 18;
+          # communicates with clightning over lightning-rpc socket
+          connections = [];
+        };
       };
 
       systemd.services = {
@@ -263,6 +268,9 @@ in {
         extraArgs = "--no-tls";
       };
 
+      # lightning-charge: Custom netns configs
+      services.lightning-charge.host = mkIf config.services.lightning-charge.enable netns.lightning-charge.address;
+
     })
     # Custom netns config option values if netns-isolation not enabled
     (mkIf (!cfg.enable) {