Enable Modder Attach Structure to Dimension

[Ecdcaeb]

In the old forge. The Structure could not be attached without dark-magic.(Transformation)
On the one hand, structure is a two-step-generated WorldGen, we could not generate it simply use existed events.
On the other hand, the vanilla and mods generate the Structure hardcodely.

In order to solve it, Hileb opened this pr.

What this pr could bring :

• make the structure attachable. (eg. spawn it in vanilla dimensions )
• make the /locate command func_184883_a (tab completion) return correct words. (It was hardcoded past.)

[kappa-maintainer]

Please don't use 1 as commit message anymore
Use this if you are too lazy: https://cz-git.qbb.sh/zh/

[Ecdcaeb]

Please don't use 1 as commit message anymore Use this if you are too lazy: https://cz-git.qbb.sh/zh/

Just see it as init or set up.
*~*

Since the pr will be intergrated into one commit...
Sorry...

[Rongmario]

Interesting PR that can be pulled in later this week, I'll play around with it.