[Enhancement] New block variants and new support block options.

[DaCrazyRaccoon]

Hey, I was wondering if these two changes would be something that would be worth adding to ImageToMapMC.

First of, add all the new possible blocks as seen on https://mike2b2t.github.io/mapartcraft/ . This gives the user more option in terms of blocks for them to choose from.

Secondly, add some settings concerning support blocks. Give the user more freedom and allow them to choose from every block in Minecraft, or a curated list to have as a support block (e.g. Netherrack, Dirt, Cobblestone, Stone, Moss Block). Also allow the user to have support blocks under every block, "Important blocks" such as slabs, carpets, and pressure plates or to not have any support blocks possibly with a warning if they have "Important blocks" selected.

[DaCrazyRaccoon]

Also as seen on https://mike2b2t.github.io/mapartcraft/ , if possible give the user the ability to select specific shades of blocks. Once again giving more power to the user and possibly even helping on issues such as #4 .