Improve structure spawns to support dungeons

[Fi0x]

Is your feature request related to a problem? If yes, describe the problem.
The large dungeon can't be spawned due to its size and generation process.

Describe the feature you'd like
Use the structure locations that minecraft uses for strongholds and generate the large dungeon like them.

Additional context

• Select a spawn point
• Set the center there
• Generate rooms around it
• Generate an entrance
  • Portal on the surface
  • Shaft to the surface

[Fi0x]

Connectors are not placed correctly.

Something wrong with the offsets.

Check if rotation or offset get applied first