Update GameMode command and increase Java support.

[nicegamer7]

This PR updates the Gamerule, Gamerules, and Version commands.

The Gamerule command no longer uses deprecated methods.

The Gamerules command had an NPE fixed and no longer uses deprecated methods.

The Version command had the Bitly Link Shortener fixed (#2278), pasting to Hastebin (#2277), and some general cleanup.

[nicegamer7]

Hey @main--, I sent you an email! This is just verification as explained in my email.

[nicegamer7]

I just pushed a commit that fixes (or rather, handles) #2215 and possibly #2219.

[nicegamer7]

While working on the webpaste package, I realized that all of the PasteServices had the same method used to upload data. So I decided to move that method to HttpAPIClient. One thing led to another, and I decided to make it support the use of auth tokens so that we can support the new Bitly V4 API and pasting to Gist again!

Now, PasteService and URLShortener inherit from HttpAPIClient. I also added to our pom.xml so that we don't have to have our Bitly token on GitHub. I tested out all the pasting services (including Gist) and they're all working as expected. The behaviour when there is no GitHub token (which is the default, unless a user compiles MV with one) is to ignore the pasting flag.

I realize that was a rather large commit, I guess I got carried away 😋.

[nicegamer7]

I think this PR has gotten rather large... it's now ready for review!

[dumptruckman]

Lots of nice stuff in here. I think the paste stuff is definitely significant enough to have its own PR. I think we should discuss that part in discord. The other command changes look good just take a look at my notes.

[nicegamer7]

I've rebased this PR and opened another for MV Portals to accommodate the change made to Buscript.