Update filament catalog: add new materials, finishes, and colors

- Add PLA Translucent, PLA Aero, TPU for AMS as new material/finish entries
- Add PA6 CF finish, expand PA6-GF, PC Basic, PC FR color lists
- Move 7 colors from PLA Basic Gradient to PLA Silk Multi-Color
- Add colors to PLA Basic, Silk+, Tough+, Galaxy, Wood, PETG HF, ABS-GF,
  TPU 85A, TPU 95A HF
- Remove Jade White from PETG HF, White from TPU 85A
- Fix Translucent Tea typo to Translucent Teal in PETG catalog
- Remove "Druga boja..." custom option from dashboard color picker
- Add missing hex entries to color lookup table

app/dashboard/page.tsx

@@ -887,7 +887,6 @@ function FilamentForm({
                 {color.name}
               </option>
             ))}
-            <option value="custom">Druga boja...</option>
           </select>
         </div>