Add many missing blocks

[SuperLlama88888]

• Add models for brewing stands, dripleaves, spore blossoms, lightning rods, tripwire hooks, string, coral fans, lecterns, chorus flowers, chorus plants, pink petals, and the enchanting table book
• Add/Fix rotations for crafters and looms
• Fix sunflower head being 1px off
• Allow block value string interpolation for the block_states field in cubes
• Add flip_textures_horizontally and flip_textures_vertically fields to cubes
• Add functionality for #exclusive_add in texture variant block state definitions for block shapes
• Cubes that copy others where both have rotation now set an additional field that keeps track of these nested rotations. After this, when bones templates are being added to the geometry file, these nested rotations are unraveled into separate bones, with the affected cubes being children of the very last one.