[8.x] Add missing force flag to queue:clear command

[bobbybouwmann]

Hi 👋 ,

Note: This is the same PR as before, but this time the command actually shows up when running php artisan queue:clear --help

I was recently deploying an application to production, where Laravel forge will run the php artisan queue:clear command. However, I was not able to call the command without confirming the confirmation. This PR adds the missing --force option. I was also so free to update the command to be in line with the other clear commands.

You can test it by running php artisan queue:clear --env=production --force and it should run without confirmation.

[frodeknutsen]

Any reason why we are going back to getOptions/getArguments instead of just using the signature?