refactor: move max into dentritic pattern

modules/common/features/image-viewer.nix

@@ -0,0 +1,27 @@
+{ ... }: {
+  flake.homeModules.commonFeatureImageViewer = { pkgs, ... }: {
+    xdg.desktopEntries.imv = {
+      name = "imv";
+      exec = "${pkgs.imv}/bin/imv %F";
+      icon = "imv";
+    };
+
+    xdg.mimeApps = let
+      value = "imv.desktop";
+
+      associations = builtins.listToAttrs (map (name: {
+          inherit name value;
+        }) [
+          "image/png"
+          "image/jpeg"
+          "image/gif"
+          "image/bmp"
+          "image/webp"
+        ]);
+    in {
+      enable = true;
+      associations.added = associations;
+      defaultApplications = associations;
+    };
+  };
+}