Allow locking NBT tags during certain Item methods

[BasiqueEvangelist]

As an example, Item#getName shouldn't really ever modify the item's NBT tag, as that can cause very strange problems with item deduplication. gadget™ should ideally have an option to disallow writing into the ItemStack#nbt field or the contained tag's tree.

Remaining tasks:

• [ ] Fix NBT lock leaking when an exception is thrown
• [ ] Add NBT locking to ItemVariants and FluidVariants
• [ ] Lock item NBT during rendering (test case: GabrielOlvH/Industrial-Revolution#558)

[BasiqueEvangelist]

Partially implemented, though it might leak the locked NBT state out of the method if an exception is thrown

[BasiqueEvangelist]

Irrelevant after 1.20.5 update.