Usability improvement: tell users when they use an invalid flag

[st0012]

As a new tapioca user, I was debugging a worker related issue with bin/tapioca dsl --verify --worker=1, but only found out I should've used --worker[s]=1 instead after an hour. So I think it could be helpful if tapioca can raise an error or give a warning about invalid flags. I think suggesting the correct name is even possible with the did_you_mean gem.

[paracycle]

I think all we need to do is to call check_unknown_options! inside the CLI class: https://github.com/rails/thor/blob/e4907fdd663d0a1ff51d18eb1827552ee61300a3/lib/thor/base.rb#L150-L154