Added new spec: "Sales Slim Shaker spec book 2025.pdf"

New door styles: Aston Green, Slim Aston Green, Double Dove White, Double Smokey Grey, Iron Black, Smokey Ash, Treasure Chest

Removed products: DMTIS, ROPE

New products: 3VDB21, 3VDB24, V3321DL, V3321DR, V3321TDL, V3321TDR, VDEP, VS33