fix and optimize casbin (#1121)

* - 删除rabac_model.conf, 改为字符串代码, 方便部署
- 删除casbin相关配置文件

* fix: delete api时只传id导致casbin_rules表清空bug

server/service/system/sys_api.go

@@ -35,9 +35,17 @@ func (apiService *ApiService) CreateApi(api system.SysApi) (err error) {
 //@return: err error
 
 func (apiService *ApiService) DeleteApi(api system.SysApi) (err error) {
-	err = global.GVA_DB.Delete(&api).Error
-	CasbinServiceApp.ClearCasbin(1, api.Path, api.Method)
-	return err
+	var entity system.SysApi
+	err = global.GVA_DB.Where("id = ?", api.ID).First(&entity).Error // 根据id查询api记录
+	if errors.Is(err, gorm.ErrRecordNotFound) {                      // api记录不存在
+		return err
+	}
+	err = global.GVA_DB.Delete(&entity).Error
+	if err != nil {
+		return err
+	}
+	CasbinServiceApp.ClearCasbin(1, entity.Path, entity.Method)
+	return nil
 }
 
 //@author: [piexlmax](https://github.com/piexlmax)