Add initial project files for Jellyfin-Plex Library Checker

- Create .editorconfig for consistent coding styles.
- Add .envrc for direnv integration.
- Include .gitignore to exclude environment and build files.
- Implement compare_movies.py and analyze_movies.py for movie library comparison and analysis.
- Implement compare_series.py and analyze_series.py for TV series library comparison and analysis.
- Add configuration example in config.example.txt.
- Create README.md with project overview, setup instructions, and usage examples.
- Add LICENSE file for MIT License.
- Include flake.nix and flake.lock for Nix-based development environment.
- Add USAGE.md for quick start guide and common commands.

flake.nix

@@ -0,0 +1,97 @@
+{
+  description = "Jellyfin-Plex Library Comparator";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+
+        # Python environment with pip and build tools
+        pythonEnv = pkgs.python3.withPackages (ps: with ps; [
+          pip
+          setuptools
+          wheel
+          virtualenv
+        ]);
+
+      in
+      {
+        apps = {
+          compare-movies = {
+            type = "app";
+            program = "${pkgs.writeShellScript "compare-movies" ''
+              cd ${./.}
+              ${pythonEnv}/bin/python compare_movies.py
+            ''}";
+          };
+          
+          analyze-movies = {
+            type = "app";
+            program = "${pkgs.writeShellScript "analyze-movies" ''
+              cd ${./.}
+              ${pythonEnv}/bin/python analyze_movies.py
+            ''}";
+          };
+          
+          compare-series = {
+            type = "app";
+            program = "${pkgs.writeShellScript "compare-series" ''
+              cd ${./.}
+              ${pythonEnv}/bin/python compare_series.py
+            ''}";
+          };
+          
+          analyze-series = {
+            type = "app";
+            program = "${pkgs.writeShellScript "analyze-series" ''
+              cd ${./.}
+              ${pythonEnv}/bin/python analyze_series.py
+            ''}";
+          };
+        };
+        
+        devShells.default = pkgs.mkShell {
+          buildInputs = [
+            pythonEnv
+          ];
+
+          shellHook = ''
+            echo "🐍 Setting up Python environment..."
+            
+            # Create virtual environment if it doesn't exist
+            if [ ! -d "venv" ]; then
+              echo "Creating virtual environment..."
+              ${pythonEnv}/bin/python -m venv venv
+            fi
+            
+            # Activate virtual environment
+            source venv/bin/activate
+            
+            # Install/upgrade dependencies
+            echo "Installing Python dependencies from requirements.txt..."
+            pip install --upgrade pip setuptools wheel --quiet
+            pip install -r requirements.txt
+            
+            echo ""
+            echo "✅ Python environment ready!"
+            echo ""
+            echo "📋 Available commands:"
+            echo "   Movies:   python compare_movies.py  |  nix run .#compare-movies"
+            echo "             python analyze_movies.py   |  nix run .#analyze-movies"
+            echo ""
+            echo "   Series:   python compare_series.py  |  nix run .#compare-series"
+            echo "             python analyze_series.py   |  nix run .#analyze-series"
+            echo ""
+          '';
+        };
+      }
+    );
+}
+