refactor(home:mime-apps): move mime configuration to relevant application modules

home/modules/desktop/media/image/imv.nix

@@ -3,6 +3,9 @@
 let
   inherit (lib) mkIf;
   cfg = config.ooknet.media.image.imv;
+  imvMime = {
+    "image/*" = ["imv.desktop"];
+  };
 in
 
 {
@@ -12,5 +15,9 @@ in
         enable = true;
       };
     };
+    xdg.mimeApps = {
+      associations.added = imvMime;
+      defaultApplications = imvMime;
+    };
   };
 }