add basic FreeBSD support for utils

src/SPC/builder/freebsd/library/BSDLibraryBase.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\freebsd\library;
+
+use SPC\builder\BuilderBase;
+use SPC\builder\freebsd\BSDBuilder;
+use SPC\builder\LibraryBase;
+use SPC\builder\traits\UnixLibraryTrait;
+
+abstract class BSDLibraryBase extends LibraryBase
+{
+    use UnixLibraryTrait;
+
+    protected array $headers;
+
+    public function __construct(protected BSDBuilder $builder)
+    {
+        parent::__construct();
+    }
+
+    public function getBuilder(): BuilderBase
+    {
+        return $this->builder;
+    }
+}

src/SPC/builder/freebsd/library/pkgconfig.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\freebsd\library;
+
+/**
+ * gmp is a template library class for unix
+ */
+class pkgconfig extends BSDLibraryBase
+{
+    use \SPC\builder\unix\library\pkgconfig;
+
+    public const NAME = 'pkg-config';
+}

src/SPC/builder/freebsd/library/zlib.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\freebsd\library;
+
+class zlib extends BSDLibraryBase
+{
+    use \SPC\builder\unix\library\zlib;
+
+    public const NAME = 'zlib';
+}