build hook plugins

plugins/sample-build-hooks/build.bat

@@ -0,0 +1,26 @@
+@echo off
+setlocal enabledelayedexpansion
+
+set "PLUGIN_DIR=%~dp0"
+set "PLUGIN_NAME=sample-build-hooks"
+set "ZIP_OUT=%PLUGIN_DIR%%PLUGIN_NAME%.zip"
+
+if exist "%ZIP_OUT%" del /f /q "%ZIP_OUT%"
+
+pushd "%PLUGIN_DIR%"
+powershell -NoProfile -ExecutionPolicy Bypass -Command "$zip = '%ZIP_OUT%'; $items = @('config.json', '%PLUGIN_NAME%.html', '%PLUGIN_NAME%.css', '%PLUGIN_NAME%.js', 'server.js'); Compress-Archive -Path $items -DestinationPath $zip -Force"
+set "ZIP_STATUS=%ERRORLEVEL%"
+popd
+if not "%ZIP_STATUS%"=="0" exit /b %ZIP_STATUS%
+
+if defined PLUGIN_SIGN_KEY (
+  where bun >nul 2>&1
+  if not errorlevel 1 (
+    echo [sign] Signing plugin with key: %PLUGIN_SIGN_KEY%
+    bun run "%~dp0..\..\Overlord-Server\scripts\plugin-sign.ts" --key "%PLUGIN_SIGN_KEY%" "%ZIP_OUT%"
+  ) else (
+    echo [warn] bun not found, skipping plugin signing
+  )
+)
+
+echo [ok] %ZIP_OUT%