Allow Farmer Villagers to Replant the Same Crop Uppon Harvest

Rationale
Currently, farmer villagers plant the first crop in their inventory after harvesting which may not always be the same crop they harvested usually leading to a farm field having one crop. This makes diversifying a farm challenging for players who want villagers to plant more than one crop in the same field.

Solution
Have farmer villagers replant crops they harvested on the same farmland block. If a farmland block has no crop, then the farmer villagers plant a crop of their choosing on the same farmland block.

Solution Scenarios
IF the farmland block has a crop:

• Harvest the crop from the farmland block.
• Plant the crop of the same type onto the farmland block.

IF the farmland block has no crop:

• Plant a crop from the first slot of the inventory.