feat: build infrastructure

Co-authored-by: Copilot <copilot@github.com>

scripts/release/build_platform.bat

@@ -0,0 +1,31 @@
+@echo off
+setlocal enabledelayedexpansion
+
+set ROOT_DIR=%~dp0\..\..
+pushd "%ROOT_DIR%"
+
+set PLATFORM=%1
+if "%PLATFORM%"=="" set PLATFORM=windows
+
+call mix deps.get
+if errorlevel 1 goto :error
+
+if not "%BDS_SKIP_TESTS%"=="1" (
+  call mix test
+  if errorlevel 1 goto :error
+)
+
+call set MIX_ENV=prod
+call mix release --overwrite bds
+if errorlevel 1 goto :error
+call mix release --overwrite bds_mcp
+if errorlevel 1 goto :error
+call mix bds.package %PLATFORM%
+if errorlevel 1 goto :error
+
+popd
+exit /b 0
+
+:error
+popd
+exit /b 1