Fix ANSI escape codes displaying as literal text in winPEAS.bat

The script was setting E=0x1B[ as a literal string instead of the actual
ESC character (ASCII 27), causing color codes to display as text like
"0x1B[33m[+]0x1B[97m" instead of rendering as colors.

Changed the SetOnce subroutine to properly capture the ESC character using
the 'prompt $E' technique before building the ANSI escape sequence prefix.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: moscowchill

winPEAS/winPEASbat/winPEAS.bat

@@ -707,7 +707,8 @@ EXIT /B
 
 :SetOnce
 REM :: ANSI escape character is set once below - for ColorLine Subroutine
-SET "E=0x1B["
+for /F %%a in ('echo prompt $E ^| cmd') do set "ESC=%%a"
+SET "E=%ESC%["
 SET "PercentageTrack=0"
 EXIT /B