Add new template for debian trixie without luks encryption; fix disk resizing on first boot; set default user and ssh keys for cloud init

mise.toml

@@ -21,10 +21,10 @@ flag "-i --install-finished-inform-port <port>" help="Server port to inform when
 '''
 run = '''
 mise run lint ${usage_dir?}
-[[ -z "${usage_install_finished_inform_port}" ]] && packer build ${usage_dir?}
+[[ -z "${usage_install_finished_inform_port}" ]] && packer build ${usage_dir?} || true
 [[ -n "${usage_install_finished_inform_port}" ]] && packer build \
   -var "install_finished_inform_port=${usage_install_finished_inform_port?}" \
-  ${usage_dir?}
+  ${usage_dir?} || true
 '''
 
 [tasks.build-luks]