Add Peter Onion's ZDE ANSI Keyboard Support

- Added new ANSI keyboard support from Peter Onion.
- ZDE is now built as part of the RomWBW build itself.
- Did not yet include support for modified ZDE escape character.
- See <https://groups.google.com/g/rc2014-z80/c/hAZen3pZb7o>

Co-Authored-By: PeterOGB <7755057+peterogb@users.noreply.github.com>

Source/Apps/Build.cmd

@@ -29,6 +29,7 @@ call :build Survey || exit /b
 call :build HTalk || exit /b
 call :build BBCBASIC || exit /b
 call :build copysl || exit /b
+call :build ZDE || exit /b
 
 goto :eof