Add 'jumpIf' and 'jumpIfNot' commands to README and executor; implement parsing, execution, and linter support for conditional command jumps in test scripts.

loop-test.bat

@@ -0,0 +1,26 @@
+@echo off
+echo PlayWrong Test Loop Script
+echo ========================
+echo.
+echo This script will run the PlayWrong test in a loop until it fails.
+echo Press Ctrl+C to stop the loop manually.
+echo.
+
+if "%~1"=="" (
+    echo Usage: loop-test.bat ^<test-file^> [profile] [options]
+    echo.
+    echo Examples:
+    echo   loop-test.bat step1.test Chrome
+    echo   loop-test.bat step1.test Chrome --delay 1000
+    echo   loop-test.bat step1.test Chrome --log my-test.log
+    echo.
+    echo Press any key to exit...
+    pause >nul
+    exit /b 1
+)
+
+echo Starting test loop for: %1 with profile: %2
+echo Log will be saved to a timestamped file
+echo.
+
+node loop-test.js %*