feat(addons): hemp plant, wild cherry tree, naturalist-lite

New addons:
- hemp-addon: silverlabs:hemp_crop (5 ages, indoor sun-lamp grown vs
  outdoor sky-lit), shears harvest, cauldron tincture, brownie food,
  bonemeal, sun-lamp redstone-lit block (light_dampening: 0 so crops
  beneath stay lit), grass-seed bootstrap, wandering-trader buyback,
  pillager raid stealing.
- trees-features-addon: ods_orch wild cherry tree — log/leaves/planks/
  stripped/sapling/fruit blocks with seasonal fruit states, structure-
  spawn worldgen.
- naturalist-lite-addon: 13-mob subset of Naturalist (deer, fox, owl,
  skunk, snake, hedgehog, red panda, capybara, elephant, kangaroo,
  moose, tiger, firefly), trimmed for Switch joinability.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

hemp-addon/hemp_RP/textures/item_texture.json

@@ -0,0 +1,10 @@
+{
+  "resource_pack_name": "hemp_RP",
+  "texture_name": "atlas.items",
+  "texture_data": {
+    "hemp_seeds": { "textures": "textures/items/hemp_seeds" },
+    "hemp_bud": { "textures": "textures/items/hemp_bud" },
+    "hemp_tincture": { "textures": "textures/items/hemp_tincture" },
+    "hemp_brownie": { "textures": "textures/items/hemp_brownie" }
+  }
+}