Refactor pet action management: rename PetAction to PetActionGather, update related models and services, and enhance resource gathering logic.

Models/PetActionGather.cs

@@ -0,0 +1,18 @@
+namespace pet_companion_api.Models
+{
+    public enum PetAction
+    {
+        UNKNOWN,
+        FEED,
+        PLAY,
+        SLEEP,
+    }
+
+    public enum PetActionGather
+    {
+        IDLE,
+        GATHERING_WISDOM,
+        GATHERING_GOLD,
+        GATHERING_FOOD,
+    }
+}