Frostbyte's Improved Inventory

Additions:

• Added shears.json to data/minecraft/tags/block/mineable to define the list of blocks that have shears as the preferred tool
• Added has_gui.json to data/minecraft/tags/block to define the list of blocks that have GUIs but not inventories

Bug Fixes:

• Tool selector now prefers pickaxes for all minecart variants
• Nearby container viewer once again recognizes single chests

Changes:

• Tool selector now uses the SHEARS_MINEABLE tag to determine whether a block's preferred tool is shears
• Nearby container viewer now uses the HAS_GUI tag to determine whether a non-inventory block should have a tab