chore(unity): 固定Unity CLI Loop本地包并移除UnitySkills依赖

Client/Packages/io.github.hatayama.uloopmcp/Editor/Security/SecuritySettings.cs

@@ -0,0 +1,16 @@
+namespace io.github.hatayama.uLoopMCP
+{
+    /// <summary>
+    /// Defines enum for security settings types
+    /// Each security setting controls the execution of specific commands
+    /// 
+    /// Related classes:
+    /// - McpSecurityChecker: Main security check logic
+    /// - McpToolAttribute: Attribute to specify command security settings
+    /// - RunTestsTool: Test execution tool
+    /// </summary>
+    public enum SecuritySettings
+    {
+        None,
+    }
+}