all application options will adapt to environment

when used either with nixos (no home-manager) or home-manager standalone, `features.applications.<name>.enable` options still perform some functionality, rather than assuming a full nixos + home-manager setup like before

modules/hosts/kitagawa/kitagawa.nix

@@ -36,6 +36,16 @@
           kitty.enable = true;
           vscode.enable = true;
           equibop.enable = true;
+          floorp.enable = true;
+          remmina.enable = true;
+          spotify = {
+            enable = true;
+            spicetify.enable = true;
+          };
+        };
+
+        cli = {
+          fastfetch.enable = true;
         };
 
         extraPackages = with pkgs; [
@@ -93,19 +103,6 @@
 
     features = {
       applications = {
-        cli = {
-          fastfetch.enable = true;
-        };
-
-        gui = {
-          floorp.enable = true;
-          remmina.enable = true;
-          spotify = {
-            enable = true;
-            spicetify.enable = true;
-          };
-        };
-
         extraPackages = with pkgs; [
           obsidian
           thunderbird