Added option to turn on/off separation of tags by custom category

src/stores/preferences/tag.ts

@@ -0,0 +1,18 @@
+import { writable } from "svelte/store";
+import TagSettings from "$lib/extension/settings/TagSettings";
+
+const tagSettings = new TagSettings();
+
+export const shouldSeparateTagGroups = writable(false);
+
+tagSettings.resolveGroupSeparation()
+  .then(value => shouldSeparateTagGroups.set(value))
+  .then(() => {
+    shouldSeparateTagGroups.subscribe(value => {
+      void tagSettings.setGroupSeparation(value);
+    });
+
+    tagSettings.subscribe(settings => {
+      shouldSeparateTagGroups.set(Boolean(settings.groupSeparation));
+    });
+  })