move zend extension check into config

src/SPC/builder/Extension.php

@@ -226,7 +226,7 @@ class Extension
         $ret = '';
         foreach ($order as $ext) {
             if ($ext instanceof Extension && $ext->isBuildShared()) {
-                if ($ext->isZendExtension()) {
+                if (Config::getExt($ext->getName(), 'zend_extension', false) === true) {
                     $ret .= " -d \"zend_extension={$ext->getName()}\"";
                 } else {
                     $ret .= " -d \"extension={$ext->getName()}\"";
@@ -448,11 +448,6 @@ class Extension
         }
     }
 
-    protected function isZendExtension(): bool
-    {
-        return false;
-    }
-
     private function getLibraryDependencies(bool $recursive = false): array
     {
         $ret = array_filter($this->dependencies, fn ($x) => $x instanceof LibraryBase);

src/SPC/builder/extension/opcache.php

@@ -51,9 +51,4 @@ class opcache extends Extension
     {
         return 'Zend Opcache';
     }
-
-    protected function isZendExtension(): bool
-    {
-        return true;
-    }
 }

src/SPC/builder/extension/xdebug.php

@@ -1,17 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace SPC\builder\extension;
-
-use SPC\builder\Extension;
-use SPC\util\CustomExt;
-
-#[CustomExt('xdebug')]
-class xdebug extends Extension
-{
-    protected function isZendExtension(): bool
-    {
-        return true;
-    }
-}