feat：优化项目信息

app/common/model/user_agent.go

@@ -0,0 +1,15 @@
+package model
+
+type UserAgent struct {
+	Model
+	ModelDeleted
+	ModelAt
+}
+
+func (m *UserAgent) TableName() string {
+	return "user_agent"
+}
+
+func NewUserAgent() *UserAgent {
+	return &UserAgent{}
+}