[greenhouse] Admin greenhouse export/import option

[mrfloris]

Is your feature request related to a problem?

Extending on the GUI suggested here: #100

Lack of easy per-gametype greenhouse management, updating, quick fixing in-game.

Describe the solution you'd like.

It would be nice if the /skyblockadmin greenhouse's GUI could have the features we find in the other addons, and that when we're done editing the greenhouses ingame, that we can export it to a json file and go to /acidadmin greenhouse's GUI and import the json database. (Etc).

Describe alternatives you've considered.

write a shell script maybe, who knows. n/a

Agreements

• I have searched for and ensured there isn't already an open issue regarding this.
• I have ensured the feature I'm requesting isn't already in the latest supported BentoBox build or Addons.

Other

Thank you for considering.