Enhance database models with comments and table descriptions

- Added comments to various fields in the database models for better clarity and understanding.
- Implemented TableComment methods for several models to provide descriptive information about their purpose.
- Updated the AutoMigrate function to support setting table comments in the database.
- Improved overall documentation within the code to facilitate future maintenance and development.

internal/model/mini_program.go

@@ -8,16 +8,20 @@ import (
 
 type MiniProgram struct {
 	ID        uint           `gorm:"primarykey" json:"id"`
-	CreatedAt time.Time      `json:"created_at"`
-	UpdatedAt time.Time      `json:"updated_at"`
-	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
+	CreatedAt time.Time      `gorm:"comment:创建时间" json:"created_at"`
+	UpdatedAt time.Time      `gorm:"comment:更新时间" json:"updated_at"`
+	DeletedAt gorm.DeletedAt `gorm:"index;comment:删除时间" json:"-"`
 
-	Name        string `gorm:"size:100;not null" json:"name"`
-	AppID       string `gorm:"size:100;uniqueIndex" json:"app_id"`
-	AppSecret   string `gorm:"size:200;not null" json:"-"`
-	Description string `gorm:"size:255" json:"description"`
+	Name        string `gorm:"size:100;not null;comment:小程序名称" json:"name"`
+	AppID       string `gorm:"size:100;uniqueIndex;comment:小程序AppID" json:"app_id"`
+	AppSecret   string `gorm:"size:200;not null;comment:小程序AppSecret" json:"-"`
+	Description string `gorm:"size:255;comment:描述" json:"description"`
 }
 
 func (MiniProgram) TableName() string {
 	return "mini_programs"
 }
+
+func (MiniProgram) TableComment() string {
+	return "小程序配置"
+}