Added more Bash-complete instances in multipass stop --force

[Artem-OSSRevival]

Closes: #3682
Previously, when the TAB pressed, only ‘Running’ instances were completed.
Now, if the --force flag is provided, additionally taken into account 'Starting', 'Restarting', 'Suspending' and 'Suspended' ones.

To reproduce:
Run service:
sudo /usr/local/bin/multipassd

Run GUI:
/usr/local/bin/multipass.gui

start and then suspend the instance

OR start/stop/suspend tasks can be done from the CLI:
multipass start --all
multipass suspend --all

Before:
Open Bash and add the script:
source <multipass>/completions/bash/multipass

Check the instance is suspended:
multipass ls

Try the bash-completion ('n' is the first letter of the instance’s name):
multipass stop --force n[TAB]

Nothing happens.

After:
Reopen Bash and add the script:
source <multipass>/completions/bash/multipass
multipass ls
multipass stop --force n[TAB]

natty-nilgai (real instance name) will be completed.

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• completions/bash/multipass: Language not supported

[xmkg]

LGTM, thanks for the contribution! A small improvement would be accepting an array of states to _multipass_instances to avoid repetition, but I'm okay with the current state as well.

[levkropp]

Yep LGTM! I suspended an instance with multipass suspend revered-goblin and saw it as one of the autocomplete options

$ multipass stop --force 
--all           --cancel        --help          revered-goblin  --time          --verbose

That being said, I don't see --force as a complete option for multipass stop

$ multipass stop --
--all      --cancel   --help     --time     --verbose  

but that's outside the scope of this PR. Approved!