Separated modpack project pages for Forge and Fabric for seamless autoupdating with 3rd party launchers

Additions:

• cherry & mangrove log variants

Change:

• extend Vertical Slab, Vertical Quarter, and Vertical Corner models downwards when on top of layers, plants, and leaves

Fixes:

• better grass texture looks better for the sillies not using continuity
• dark_limestone ctm
• Fixed registration block entity types (Forge)
• Log Pillar models
• Fixed more vertical quarters
• Fix changing of render types for vanilla blocks (Forge)
• Fix remaining reported vertical quarters