📦 Created config files with common code

- Created common.nix for various configs
- Created theme.nix for theme related configs
- Moved some code to more logical files
- Moved some standalone files into nix multiline strings, in order to
  inject data

modules/fonts.nix

@@ -1,5 +1,9 @@
 { pkgs, ... }:
+
 {
+  environment.systemPackages = with pkgs; [
+    font-awesome # Icons
+  ];
 
   fonts = {
     fontconfig.enable = true;
@@ -8,6 +12,7 @@
       jetbrains-mono
       # The line below will replace the lines above in 25.05
       # nerd-fonts.jetbrains-mono
+      font-awesome
     ];
   };