Add LNBits service configuration and Nginx integration

Introduced a new configuration for the LNBits service, enabling it with customizable options such as host, port, and environment variables. The Nginx configuration has been updated to include WebSocket support and proxy settings for LNBits, ensuring secure and efficient handling of requests. This enhances the overall web service management and modularity of the NixOS setup.

config/shared.nix

@@ -4,6 +4,8 @@
   imports = [
     ./nginx.nix
     ./pict-rs.nix
+    ./modules/lnbits-service.nix
+    ./lnbits.nix
   ];
 
   # Set hostname (passed as parameter)
@@ -31,16 +33,6 @@
         tryFiles = "$uri $uri/ /index.html";
       };
     };
-
-    # LNbits service (adjust port as needed)
-    "lnbits.${domain}" = {
-      forceSSL = true;
-      enableACME = true;
-      locations."/" = {
-        proxyPass = "http://localhost:5000";
-        proxyWebsockets = true;
-      };
-    };
   };
 
   # NixOS release version