[Scripts] Update clean.ps1

Author: Connection Refused

clean.ps1

@@ -20,11 +20,14 @@ Delete 'Tests\obj'
 Delete 'TestResults'
 Delete 'Redirector\bin'
 Delete 'Redirector\obj'
+Delete 'RedirectorTester\bin'
+Delete 'RedirectorTester\obj'
 Delete 'RouteHelper\bin'
 Delete 'RouteHelper\obj'
 
 Delete 'Netch\*.csproj.user'
 Delete 'Redirector\*.vcxproj.user'
+Delete 'RedirectorTester\*.csproj.user'
 Delete 'RouteHelper\*.vcxproj.user'
 
 .\other\clean.ps1