feat: add analytics hooks and routes for moderation statistics

- Implemented `useAnalytics` hook for fetching and managing analytics data.
- Created `analyticsStore.ts` to handle database queries for hourly stats, topic trends, user leaderboard, and moderation stats.
- Added Express routes for analytics endpoints including overview, hourly stats, topic trends, user leaderboard, moderation stats, and top violators.
- Introduced a utility function `filterHits` for filtering specific terms in text.

test_filter.js

@@ -0,0 +1,19 @@
+function filterHits(text, hits) {
+  const lowerText = text.toLowerCase();
+  return hits.filter(hit => {
+    if (hit === "asu") {
+      const words = lowerText.match(/[\p{L}\p{N}_]+/gu) || [];
+      return words.some(w => 
+        w.includes("asu") && 
+        !["asus", "masuk", "termasuk", "dimasukkan", "memasukkan", "kasur", "asumsi", "asuransi", "asupan", "pasukan", "pasundan"].includes(w)
+      );
+    }
+    return true;
+  });
+}
+
+console.log(filterHits("Gua aja mau membeli asus", ["asu"])); // []
+console.log(filterHits("asus asu", ["asu"])); // ["asu"]
+console.log(filterHits("masuk", ["asu"])); // []
+console.log(filterHits("asuuu", ["asu"])); // ["asu"]
+console.log(filterHits("ngasu", ["asu"])); // ["asu"]