Add Windows builder for brotli library

brotli was listed in lib.json with Windows static lib entries but had no
Windows library builder, causing Windows builds to fail when brotli is
included as a suggested dependency.

The builder follows the standard Windows CMake pattern, disabling shared
libs and build tools for a minimal static build.

Author: Hendrik Mennen

src/SPC/builder/windows/library/brotli.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\windows\library;
+
+use SPC\store\FileSystem;
+
+class brotli extends WindowsLibraryBase
+{
+    public const NAME = 'brotli';
+
+    protected function build(): void
+    {
+        // reset cmake
+        FileSystem::resetDir($this->source_dir . '\build');
+
+        // start build
+        cmd()->cd($this->source_dir)
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                '-B build ' .
+                '-A x64 ' .
+                "-DCMAKE_TOOLCHAIN_FILE={$this->builder->cmake_toolchain_file} " .
+                '-DCMAKE_BUILD_TYPE=Release ' .
+                '-DBUILD_SHARED_LIBS=OFF ' .
+                '-DBROTLI_BUILD_TOOLS=OFF ' .
+                '-DBROTLI_BUNDLED_MODE=OFF ' .
+                '-DCMAKE_INSTALL_PREFIX=' . BUILD_ROOT_PATH . ' '
+            )
+            ->execWithWrapper(
+                $this->builder->makeSimpleWrapper('cmake'),
+                "--build build --config Release --target install -j{$this->builder->concurrency}"
+            );
+    }
+}