Upgrades commandline framework to use GLI

Since all of our other tools are now using GLI, changing things so this does as well.

URLs
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* Add any additional URLs (like Helpspot tickets)

QA Plan
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Try running the scripts locally.  I was calling the bin file directly doing `bin/op`, but if you bundle, it should add the `op` command to your path.

I have tested out a decent number of these already (this PR was created using `pull-request`), so just confirm that the rest are working as expected.
At the time of writing this, it seems like `Octopolo::WrongBranch` was a better error name then `Octopolo::Scripts::TagRelease::WrongBranch`.  I could define it in that class as well outside of the `Script` namespace, I just figured it would make use of the empty module a little better this way.

I am not really partial to any solution though.