Chunk stateless feed requests to support more than 500 subscriptions (#967)

Yattee/Extensions/Array+Chunked.swift

@@ -0,0 +1,17 @@
+//
+//  Array+Chunked.swift
+//  Yattee
+//
+//  Splitting arrays into fixed-size chunks.
+//
+
+import Foundation
+
+extension Array {
+    /// Splits the array into chunks of the specified size.
+    func chunked(into size: Int) -> [[Element]] {
+        stride(from: 0, to: count, by: size).map {
+            Array(self[$0..<Swift.min($0 + size, count)])
+        }
+    }
+}