[High Five] Change subclass using Interface buttons

Once I saw how in a newer game client the developers added the ability to switch between subclasses directly from the interface. I thought it was funny, and in the High Five client the effect used when changing a subclass was implemented.

I had to slightly correct the game client and some of the packets to implement the transfer of information that the client of the current chronicles was not designed for. Well, and I had to slightly correct the server part.

In the end it turned out quite cool. Firstly, all the information about the subclasses available for change is visible. Secondly, I pressed a button and changed without having to visit the corresponding guild.