♻️ refactor(setting): move API info functions to dedicated module

Move validateApiInfo and getApiInfo functions from controller layer to
setting/api_info.go to improve code organization and separation of concerns.

Changes:
- Create setting/api_info.go with ValidateApiInfo() and GetApiInfo() functions
- Remove validateApiInfo function from controller/option.go
- Remove getApiInfo function from controller/misc.go
- Update function calls to use setting package
- Clean up unused imports (net/url, regexp, fmt) in controller/option.go

This refactoring aligns the API info configuration management with the
existing pattern used by other setting modules (chat.go, group_ratio.go,
rate_limit.go, etc.) and improves code reusability and maintainability.

controller/misc.go

@@ -74,33 +74,12 @@ func GetStatus(c *gin.Context) {
 			"oidc_client_id":              system_setting.GetOIDCSettings().ClientId,
 			"oidc_authorization_endpoint": system_setting.GetOIDCSettings().AuthorizationEndpoint,
 			"setup":                       constant.Setup,
-			"api_info":                    getApiInfo(),
+			"api_info":                    setting.GetApiInfo(),
 		},
 	})
 	return
 }
 
-func getApiInfo() []map[string]interface{} {
-	// 从OptionMap中获取API信息，如果不存在则返回空数组
-	common.OptionMapRWMutex.RLock()
-	apiInfoStr, exists := common.OptionMap["ApiInfo"]
-	common.OptionMapRWMutex.RUnlock()
-	
-	if !exists || apiInfoStr == "" {
-		// 如果没有配置，返回空数组
-		return []map[string]interface{}{}
-	}
-	
-	// 解析存储的API信息
-	var apiInfo []map[string]interface{}
-	if err := json.Unmarshal([]byte(apiInfoStr), &apiInfo); err != nil {
-		// 如果解析失败，返回空数组
-		return []map[string]interface{}{}
-	}
-	
-	return apiInfo
-}
-
 func GetNotice(c *gin.Context) {
 	common.OptionMapRWMutex.RLock()
 	defer common.OptionMapRWMutex.RUnlock()