More Chiseled Bookshelf Variants

1.7.0:

• 1.21.4: Add Pale Oak Chiseled Bookshelf
• Fix Crimson and Warped Chiseled Bookshelf textures using generic wood colors on the book containing front part (now each use colors specific to their wood/stem type)

Looking for changes of previous versions?
You can find them in the changelog history/CHANGELOG_history.md).