refactor(home-manager): separate configuration.nix and home.nix by adding home-manager as a module

hosts/neon/home.nix

@@ -8,7 +8,6 @@
   # user packages
   home.packages = with pkgs; [
     discord
-    #teamspeak3 # unmaintained qtwebkit
     fastfetch
     screenfetch
     zip
@@ -44,6 +43,7 @@
     usbutils
     powerline-fonts
     powerline-symbols
+    nerd-fonts.sauce-code-pro
   ];
 
   # configure git
@@ -52,7 +52,7 @@
     userName = "aaron";
     userEmail = "aaron@0x29a.ch";
   };
- 
+
   # configure zsh theme
   programs.zsh = {
     enable = true;
@@ -61,6 +61,7 @@
     oh-my-zsh = {
       enable = true;
       theme = "agnoster";
+      #plugins = [ "git" "ssh-agent" ];
     };
   };
 
@@ -74,7 +75,7 @@
     gtk3.extraConfig.gtk-application-prefer-dark-theme = 1;
     gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
   };
-  
+
   # set qt theme
   qt = {
     enable = true;