Add commands to run for specific Blueprint Bundles

[Poslovitch]

Description

Is your feature request related to a problem?

From #704.

Describe the solution you'd like us to implement.

Blueprint Bundles could have custom commands to be run when being pasted.

Describe alternatives you've considered.

None.

Additional context

None.

[BONNe]

Up ^^ Up

This would "solve" issues for people who would like to do some extra modifications, like change biome, set different starting kits, add minions or do some other weird stuff with the game.

[fjeddy]

Do it, just, do it! 🤣