Refactor NixOS module and flake configuration for lidarr-mb-gap

- Updated `flake.nix` to streamline output definitions and improve readability.
- Refactored NixOS module configurations in `nixos/lidarr-mb-gap.nix` for better structure and clarity.
- Simplified the package import process in `nix/package.nix` by removing unnecessary parameters.
- Enhanced example configurations in `nixos/EXAMPLE_CONFIG.nix` to align with the new structure.

flake.nix

@@ -6,7 +6,8 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs =
+    { nixpkgs, flake-utils }:
     let
       # NixOS module output (not system-specific)
       # The module accepts a package option, which can be set from the flake's packages
@@ -17,7 +18,9 @@
     {
       # Export NixOS modules
       nixosModules = nixosModules;
-    } // flake-utils.lib.eachDefaultSystem (system:
+    }
+    // flake-utils.lib.eachDefaultSystem (
+      system:
       let
         pkgs = import nixpkgs { inherit system; };
         lib = pkgs.lib;
@@ -29,10 +32,12 @@
       {
         devShells.default = pkgs.mkShell {
           buildInputs = [
-            (pkgs.python3.withPackages (ps: with ps; [
-              requests
-              python-dotenv
-            ]))
+            (pkgs.python3.withPackages (
+              ps: with ps; [
+                requests
+                python-dotenv
+              ]
+            ))
             pkgs.black
           ];
           shellHook = ''
@@ -55,4 +60,3 @@
       }
     );
 }
-