feat(camping): three-tier ore detector with private-chest faraday cage

New basic/improved/advanced detectors (8/16/32 block range). Aim and
right-click to ping the nearest ore on the view ray; pitch-coded sound
and action-bar text show distance and ore type. Any ore within 4 blocks
of a silverlabs:private_chest is hidden — chests act as faraday cages
so claimed bases stay private from neighbours' detectors.

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

camping-supplies-addon/camping_supplies_RP/textures/item_texture.json

@@ -7,6 +7,15 @@
     },
     "hammock_item": {
       "textures": "textures/items/hammock"
+    },
+    "ore_detector_basic": {
+      "textures": "textures/items/ore_detector_basic"
+    },
+    "ore_detector_improved": {
+      "textures": "textures/items/ore_detector_improved"
+    },
+    "ore_detector_advanced": {
+      "textures": "textures/items/ore_detector_advanced"
     }
   }
 }