Cannon for 1.12.2

[Tiko8533]

The cannon and training dummy were excellent features and it would be great to see them added back.

[ThexXTURBOXx]

Both are planned, but only the cannon is (partially) implemented yet

[ThexXTURBOXx]

Let's try out something crazy... Maybe someone wants to do this :)

I tagged this PR as being part of Hacktoberfest.
So, if someone is able to fix and properly test this issue, he is one step closer to completing Hacktoberfest 2022 :)