Add shortcut for bullseye-fasttrack build with sbuild

sbuild-bullseye-fto

+#sbuild -A -s --force-orig-source -c bullseye-amd64-sbuild --extra-repository='deb http://deb.debian.org/debian bullseye-backports main' --extra-repository='deb http://incoming.debian.org/debian-buildd buildd-bullseye-backports main' --extra-repository='deb http://fasttrack.debian.net/debian bullseye-backports-staging main' --extra-repository='deb http://fasttrack.debian.net/debian bullseye-fasttrack main' --extra-repository-key=/etc/apt/trusted.gpg.d/fasttrack-archive-keyring.gpg --build-dep-resolver=aspcud -d bullseye-fasttrack --no-run-lintian "$@"
+sbuild -A -s --force-orig-source -c bullseye-amd64-sbuild --extra-repository='deb http://deb.debian.org/debian bullseye-backports main' --extra-repository='deb http://fasttrack.debian.net/debian bullseye-fasttrack main' --extra-repository='deb http://fasttrack.debian.net/debian bullseye-backports-staging main' --extra-repository-key=/etc/apt/trusted.gpg.d/fasttrack-archive-keyring.gpg --build-dep-resolver=aspcud -d bullseye-fasttrack --no-run-lintian "$@"