Add check.bat - Windows test runner script

check.bat

@@ -0,0 +1,60 @@
+@echo off
+setlocal EnableDelayedExpansion
+
+echo ==========================================
+echo uTun Test Suite - Windows
+echo ==========================================
+echo.
+
+set "TESTS_DIR=tests"
+set "LOGS_DIR=tests\logs"
+set "PASSED=0"
+set "FAILED=0"
+set "TOTAL=0"
+
+:: Create logs directory if not exists
+if not exist "%LOGS_DIR%" mkdir "%LOGS_DIR%"
+
+:: List of all test executables
+set "TEST_LIST=test_etcp_crypto test_crypto test_etcp_two_instances test_etcp_simple_traffic test_etcp_minimal test_etcp_100_packets test_pkt_normalizer_etcp test_pkt_normalizer_standalone test_etcp_api test_ll_queue test_ecc_encrypt test_intensive_memory_pool test_memory_pool_and_config test_packet_dump test_u_async_comprehensive test_u_async_performance test_debug_categories test_config_debug test_route_lib test_bgp_route_exchange bench_timeout_heap bench_uasync_timeouts"
+
+echo Running tests...
+echo.
+
+for %%t in (%TEST_LIST%) do (
+    set /a TOTAL+=1
+    set "TEST_EXE=%TESTS_DIR%\%%t.exe"
+    set "LOG_FILE=%LOGS_DIR%\%%t.log"
+    
+    if exist "!TEST_EXE!" (
+        echo [RUN] %%t.exe
+        "!TEST_EXE!" > "!LOG_FILE!" 2>&1
+        if !ERRORLEVEL! equ 0 (
+            echo [PASS] %%t.exe
+            set /a PASSED+=1
+        ) else (
+            echo [FAIL] %%t.exe ^(exit code: !ERRORLEVEL!^)
+            set /a FAILED+=1
+        )
+    ) else (
+        echo [SKIP] %%t.exe ^(not found^)
+    )
+)
+
+echo.
+echo ==========================================
+echo Test Summary
+echo ==========================================
+echo Total:  %TOTAL%
+echo Passed: %PASSED%
+echo Failed: %FAILED%
+echo.
+
+if %FAILED% equ 0 (
+    echo All tests PASSED!
+    exit /b 0
+) else (
+    echo Some tests FAILED!
+    echo Check logs in %LOGS_DIR% for details
+    exit /b 1
+)