chore(locksmithctl): remove daemon as a subcommand

Rely on the symlink for now. The daemon subcommand is confusing for a
user otherwise.
feat(locksmithctl): support multiple strategies

See the README.md additions for information.
chore(locksmithctl): use a smaller maximum retry

use 5 minutes instead of 30. Most machines should reboot in about a 5
minute range at the maximum.
fix(lock): return the semaphore count on error
Merge branch 'configuration' into working-daemon
fix(locksmithctl): log if lockAndReboot returns

lockAndReboot should loop forever. If it returns it means that the login
reboot signal never caused a reboot. Log this.
fix(locksmithctl): remove a race with GetStatus

GetStatus was happening before the StatusSignal channel was setup. Do it
after so we don't miss an event.