Change trending category button behavior

Extensions/CaseIterable+Next.swift

@@ -0,0 +1,8 @@
+extension CaseIterable where Self: Equatable {
+    func next() -> Self {
+        let all = Self.allCases
+        let idx = all.firstIndex(of: self)!
+        let next = all.index(after: idx)
+        return all[next == all.endIndex ? all.startIndex : next]
+    }
+}