refactor: consolidate app configurations and utility scripts

- Move 32+ app-specific scripts from features/apps/scripts/ to features/scripts/utils/ for centralized packaging.
- Create individual Nix modules for orphaned app configurations (btop, kitty, tmux, etc.) in features/apps/ using xdg.configFile.
- Fix broken paths in core/system/makima.nix and features/apps/vscode.nix.
- Update VSCode configuration to use the modern 'profiles.default.userSettings' API, resolving deprecation warnings.
- Merge duplicate 'nomarchy-launch-walker' scripts into a single robust utility.
- Remove stale root 'config/' directory.
- Update README.md and docs/creating-themes.md to reflect the new architecture and keybindings.
- Ensure all modules are correctly imported and verified via nix flake check.

core/home/config/nomarchy/default/hypr/bindings/utilities.conf

@@ -1,16 +1,16 @@
 # Menus
-bindd = SUPER, SPACE, Launch apps, exec, nomarchy-menu
+bindd = SUPER, SPACE, Launch apps, exec, nomarchy-launch-walker
 bindd = SUPER CTRL, E, Emoji picker, exec, nomarchy-menu symbols
 bindd = SUPER CTRL, C, Capture menu, exec, nomarchy-menu capture
 bindd = SUPER CTRL, O, Toggle menu, exec, nomarchy-menu toggle
-bindd = SUPER ALT, SPACE, Nomarchy menu, exec, nomarchy-menu
+bindd = SUPER ALT, SPACE, Toggle top bar, exec, nomarchy-toggle-waybar
 bindd = SUPER, ESCAPE, System menu, exec, nomarchy-menu system
 bindld = , XF86PowerOff, Power menu, exec, nomarchy-menu system
 bindd = SUPER, K, Show key bindings, exec, nomarchy-menu-keybindings
 bindd = , XF86Calculator, Calculator, exec, gnome-calculator
 
 # Aesthetics
-bindd = SUPER SHIFT, SPACE, Toggle top bar, exec, nomarchy-toggle-waybar
+bindd = SUPER SHIFT, SPACE, Nomarchy menu, exec, nomarchy-menu
 bindd = SUPER CTRL, SPACE, Theme background menu, exec, nomarchy-menu background
 bindd = SUPER SHIFT CTRL, SPACE, Theme menu, exec, nomarchy-menu theme
 bindd = SUPER, BACKSPACE, Toggle window transparency, exec, nomarchy-hyprland-active-window-transparency-toggle