Include a mapping for yOffset for different blocks (and entities?)

[SpraxDev]

Currently, the default yOffset is dependent on (ChairUtils:114):

• Sitting on ArmorStand?
• Sitting on TrapDoor?
• Sitting on Stair/Slab?

This could be extended for all types of blocks. Most are perfect cubes (1x1x1) and do not require any special treatment.

If anybody wants to do the research for the offsets, that would be really appreciated! (#130)

[SpraxDev]

This also seems to be version dependent ,_,
Stairs for example need another offset in 1.20+ although they look the same height? Maybe it's related to the ArmorStand?