(For 2026.3) Block/item base support for Shelf & Spear from recent drops

With the release of 2026.2 with MC 26.1 support, I was hoping that there would be block/item base support for Shelves and Spears.
Unfortunately that wasn't the case, and since I don't know how the code works. I don't have a way to replicate them.

Since my first mod is purely based on expanding block sets, QoL features & more wood sets. I feel like it is a shame that I am currently unable to include custom Shelves into my pre-existing wood sets. Or being unable to create Spears out of new ore types.

So with both the purpose of making MCreator more user friendly to people like me that don't know how to code and supporting newer MC updates, I am making this suggestion to hopefully raise attention on making Shelf & Spear bases.