nixvim: move plugin configuration

modules2/nixvim/oil.nix

@@ -0,0 +1,23 @@
+{
+  flake.modules.nixvim.custom = {
+    plugins.oil = {
+      enable = true;
+
+      settings = {
+        delete_to_trash = true;
+
+        keymaps."-" = "actions.parent";
+
+        skip_confirm_for_simple_edits = true;
+        view_options.show_hidden = true;
+      };
+    };
+
+    keymaps = [
+      {
+        action = "<cmd>Oil<CR>";
+        key = "-";
+      }
+    ];
+  };
+}