Add stub with array shape for FileUpload::getImageSize()

https://doc.nette.org/en/http/request#toc-getimagesize

Author: spaze

Diff for: extension.neon

@@ -21,6 +21,7 @@ parameters:
 		- stubs/Forms/Form.stub
 		- stubs/Forms/Rules.stub
 		- stubs/Http/SessionSection.stub
+		- stubs/Http/FileUpload.stub
 		- stubs/Routing/Router.stub
 		- stubs/Utils/ArrayHash.stub
 		- stubs/Utils/Arrays.stub

Diff for: stubs/Http/FileUpload.stub

@@ -0,0 +1,16 @@
+<?php
+
+namespace Nette\Http;
+
+class FileUpload
+{
+
+	/**
+	 * @return array{0:positive-int, 1:positive-int}|null
+	 */
+	public function getImageSize(): ?array
+	{
+		// nothing
+	}
+
+}