Add filter to allow themes to increase dynamic content post limit (#57)

Author: Petter Walbø Johnsgård

class-grid.php

@@ -264,7 +264,7 @@ public function get_fields() : array {
 								'required'      => 1,
 								'default_value' => 3,
 								'min'           => 1,
-								'max'           => 10,
+								'max'           => apply_filters( 'hogan/module/grid/dynamic_content_limit', 10 ),
 								'step'          => 1,
 								'wrapper'       => [
 									'width' => '50',