LifeCrops: Automation

This release adds the next automation layer: world sprinklers, world fertilizer spreaders, the Auto Tree Planter, a cleaner Automations Workbench, and several stability fixes found during machine testing.

- Added three Sprinkler tiers for watering covered world farmland:
  - Basic Sprinkler: radius 2, 5x5 coverage, 500 water reservoir.
  - Standard Sprinkler: radius 3, 7x7 coverage, 1500 water reservoir.
  - Advanced Sprinkler: radius 4, 9x9 coverage, no water cost.
- Added three Fertilizer Spreader tiers for fertilizing covered world farmland:
  - Basic Fertilizer Spreader: radius 2, 5x5 coverage, 500 fertilizer reservoir.
  - Standard Fertilizer Spreader: radius 3, 7x7 coverage, 1500 fertilizer reservoir.
  - Advanced Fertilizer Spreader: radius 4, 9x9 coverage, no fertilizer cost.
- Added simple custom UIs for Sprinklers and Fertilizer Spreaders with reservoir status, enabled state, and coverage mode.
- Added forward and radius coverage modes for Sprinklers and Fertilizer Spreaders.
- Added the Auto Tree Planter, an internal tree-growing machine for base-game saplings.
- Added Auto Tree Planter water and fertilizer reservoirs.
- Added Auto Tree Planter sapling recovery upgrades, including Basic, Refined, Advanced, and Masterwork tiers.
- Added generic staged Auto Tree Planter growth visuals using three authored growth models plus the empty base model.
- Added base-game-only simulated tree outputs, including trunks, sticks, tree sap, matching leaves where available, and known fruit-tree outputs.
- Added Automations Workbench tab split: Machines, Sprinklers, and Upgrades.
- Added early hidden-slot drop filters for Auto Crop Pot, Auto Tree Planter, Sprinkler, and Fertilizer Spreader marker slots.