Restructure oSSH using uber/fx

[dylandreimerink]

I recently became aware of the uber/fx library, which has the goal of decreasing the work needed to init/bootstrap a complex application like oSSH. Perhaps it is not something we need or want for this scale of application, but it does make the code more modular, like the the services system of Symfony.

[toxyl]

This looks interesting to me, maybe a bit overkill at the current state, but I can see it paying off in the future, especially with the modules which could be interesting for fine-grained control of the tarpots behavior.

[toxyl]

While it certainly is interesting, currently I see no need for its implementation. It might be interesting for a v2, tho, therefore tagging it.