Add Aspen Trees with unique design to Dappled Forest

The Autumn themed Forest looks great, but I think their generation design could be better by adding in Aspen trees as a new tree type.

• These should use the yellow leaves, which would have a pale golden yellow cream-like logs with a similar design to Poplars.

• The wood color can be a similar shade to the poplar grey but instead be a pale golden yellow similar to the logs.

• The tree design should make the leaves more oval shaped by starting lower along the trunk, widening at top of trunk, & tapering/sliming again at top. The trunk will also be 7-9 blocks tall, leaves starting around block 2 or 3. I think this same design should be used for Poplar trees as well to provide both a sense of uniqueness to the forest by introducing the new shape and a sense of consistency by making Poplar and Aspens share the same design.