feat(user): 添加 GORM 代码生成工具并更新数据库配置

- 在项目中引入 GORM 相关依赖
- 添加 GORM代码生成工具 gen.go
- 更新 MySQL 数据库配置
- 新增 .env 文件到 .gitignore

app/user/cmd/gorm_gen/gen.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"github.com/suyiiyii/hertz101/app/user/biz/dal/mysql"
+	"gorm.io/gen"
+)
+
+func main() {
+	db := mysql.DB
+
+	g := gen.NewGenerator(gen.Config{
+		OutPath: "biz/dal/query",
+		Mode:    gen.WithoutContext | gen.WithDefaultQuery | gen.WithDefaultQuery,
+	})
+
+	g.UseDB(db)
+
+	g.ApplyBasic(g.GenerateModel("users"))
+}

app/user/cmd/migrate/migrate.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"github.com/suyiiyii/hertz101/app/user/biz/dal/mysql"
+	"github.com/suyiiyii/hertz101/app/user/biz/model"
+)
+
+func main() {
+	err := mysql.DB.AutoMigrate(&model.User{})
+	if err != nil {
+		panic(err)
+	}
+}