Implement rich NixOS configuration system

✅ COMPLETE: Full NixOS-style configuration system implemented

🎯 Features:
- Rich configuration options for Quickshell, Hyprland, and Terminal
- Type-safe NixOS module options with defaults and descriptions
- Generated configuration files from Nix expressions
- Example configurations (gaming, productivity, minimalist)
- Comprehensive documentation

🔧 Configuration Modules:
- modules/components/quickshell-config.nix - Quickshell options
- modules/components/hyprland-config.nix - Hyprland options
- modules/components/terminal-config.nix - Terminal options

📝 Example Usage:
programs.dots-hyprland = {
  quickshell.bar.utilButtons.showColorPicker = true;
  hyprland.general.gapsIn = 6;
  terminal.colors.alpha = 0.90;
};

🎨 Generated Files:
- ~/.config/quickshell/ii/modules/common/Config.qml (NixOS-managed)
- ~/.config/hypr/general.conf (NixOS-managed)
- ~/.config/foot/foot.ini (NixOS-managed)

✅ Tested: All configurations build and activate successfully
🎉 Ready for production use with full NixOS declarative configuration!

flake.nix

@@ -64,6 +64,106 @@
                 source = ./configs;  # Use local configs
                 packageSet = "essential";
                 mode = "declarative";
+                
+                # 🎨 Quickshell Configuration
+                quickshell = {
+                  appearance = {
+                    extraBackgroundTint = true;
+                    fakeScreenRounding = 2;  # When not fullscreen
+                    transparency = false;
+                  };
+                  
+                  bar = {
+                    bottom = false;  # Top bar
+                    cornerStyle = 0;  # Hug style
+                    topLeftIcon = "spark";
+                    showBackground = true;
+                    verbose = true;
+                    
+                    utilButtons = {
+                      showScreenSnip = true;
+                      showColorPicker = true;   # 🎯 Enable color picker!
+                      showMicToggle = false;
+                      showKeyboardToggle = true;
+                      showDarkModeToggle = true;
+                      showPerformanceProfileToggle = false;
+                    };
+                    
+                    workspaces = {
+                      monochromeIcons = true;
+                      shown = 10;
+                      showAppIcons = true;
+                      alwaysShowNumbers = false;
+                      showNumberDelay = 300;
+                    };
+                  };
+                  
+                  battery = {
+                    low = 20;
+                    critical = 5;
+                    automaticSuspend = true;
+                    suspend = 3;
+                  };
+                  
+                  apps = {
+                    terminal = "foot";
+                    bluetooth = "kcmshell6 kcm_bluetooth";
+                    network = "plasmawindowed org.kde.plasma.networkmanagement";
+                    taskManager = "plasma-systemmonitor --page-name Processes";
+                  };
+                  
+                  time = {
+                    format = "hh:mm";
+                    dateFormat = "ddd, dd/MM";
+                  };
+                };
+                
+                # 🖥️ Hyprland Configuration
+                hyprland = {
+                  general = {
+                    gapsIn = 4;
+                    gapsOut = 7;
+                    borderSize = 2;
+                    allowTearing = false;
+                  };
+                  
+                  decoration = {
+                    rounding = 16;
+                    blurEnabled = true;
+                  };
+                  
+                  gestures = {
+                    workspaceSwipe = true;
+                  };
+                  
+                  monitors = [
+                    # Add your monitor config here, e.g.:
+                    # "eDP-1,1920x1080@60,0x0,1"
+                  ];
+                };
+                
+                # 🖥️ Terminal Configuration
+                terminal = {
+                  scrollback = {
+                    lines = 1000;
+                    multiplier = 3.0;
+                  };
+                  
+                  cursor = {
+                    style = "beam";
+                    blink = false;
+                    beamThickness = 1.5;
+                  };
+                  
+                  colors = {
+                    alpha = 0.95;
+                  };
+                  
+                  mouse = {
+                    hideWhenTyping = false;
+                    alternateScrollMode = true;
+                  };
+                };
               };
             }
           ];