Add InputDeviceIconSetSO configuration guide and related documentation

- Created a new markdown file detailing the configuration of InputDeviceIconSetSO.
- Included sections on system architecture, field explanations, image specifications, and complete workflow from setup to runtime.
- Documented the automatic device recognition logic and provided troubleshooting for common issues.
- Added references to relevant files and scripts for easier navigation.

Assets/_Game/Scripts/Core/Events/InteractPromptEvent.cs

@@ -0,0 +1,22 @@
+namespace BaseGames.Core.Events
+{
+    /// <summary>
+    /// 交互提示事件负载。
+    /// 由 InteractableDetector 广播，包含触发动作名称和显示文本，
+    /// UI 层（InteractPromptWidget）据此查询图标并显示提示。
+    /// </summary>
+    public readonly struct InteractPromptEvent
+    {
+        /// <summary>InputSystem Action 名称，如 "Interact"。用于查询按键图标。</summary>
+        public readonly string ActionName;
+
+        /// <summary>交互物提供的说明文本，如 "对话"、"存档"、"传送"。</summary>
+        public readonly string LabelText;
+
+        public InteractPromptEvent(string actionName, string labelText)
+        {
+            ActionName = actionName;
+            LabelText  = labelText;
+        }
+    }
+}

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Assets/_Game/Scripts/Core/Events/InteractPromptEventChannelSO.cs

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+using UnityEngine;
+
+namespace BaseGames.Core.Events
+{
+    [CreateAssetMenu(menuName = "BaseGames/Events/InteractPrompt")]
+    public class InteractPromptEventChannelSO : BaseEventChannelSO<InteractPromptEvent> { }
+}

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