feat: check integration plugins with wpct dependency checker filters

wpct-erp-forms.php

@@ -2,6 +2,7 @@
 
 namespace WPCT_ERP_FORMS;
 
+use Exception;
 use WPCT_ERP_FORMS\WPCF7\Integration as Wpcf7Integration;
 use WPCT_ERP_FORMS\GF\Integration as GFIntegration;
 
@@ -49,10 +50,10 @@ class Plugin
                 return $dependencies;
             });
 
-            if (is_plugin_active('wp-contact-form-7/wp-contact-form-7.php')) {
+            if (apply_filters(false, 'wp-contact-form-7/wp-contact-form-7.php')) {
                 require_once 'includes/integrations/wpcf7/class-integration.php';
                 $this->integrations['wpcf7'] = new Wpcf7Integration();
-            } else if (is_plugin_active('gravityforms/gravityforms.php')) {
+            } else if (apply_filters(false, 'gravityforms/gravityforms.php')) {
                 require_once 'includes/integrations/gf/class-integration.php';
                 $this->integrations['gf'] = new GFIntegration();
             }