dom0/qvm-tools: introduce qvm-service tool
dom0/qvm-tools: introduce qvm-service tool

Allow setting vm services same as in qubes-manager

QubesOS/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,woju/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin