Added convenience shell scripts

repo-cleanup.cmd

@@ -0,0 +1,25 @@
+@ECHO OFF
+TITLE Clean up Unity Project repo
+SETLOCAL EnableDelayedExpansion
+
+CD "%~dp0"
+git rev-parse --is-inside-work-tree >NUL || GOTO die
+
+git clean -dfX --dry-run "%~dp0."  || GOTO die
+
+ECHO.
+CHOICE /M "Execute"
+IF !ERRORLEVEL! NEQ 1 (
+	ECHO Aborting cleanup...
+) ELSE (
+	git clean -dfX "%~dp0." || GOTO die
+	ECHO Done.
+)
+
+:end
+PAUSE
+EXIT /B 0
+
+:die
+PAUSE
+EXIT /B %ERRORLEVEL%