新增功能-api生成数据库并初始化回写配置

修改gva initdb 判断是否已经创建的一些小问题
新增api生成数据库并初始化回写配置
修改文件：
server/cmd/gva/initdb.go
server/cmd/information/data_authorities.go
server/cmd/information/workflow.go
server/initialize/gorm
server/main.go

新增文件：
server/api/v1/sys.initdb.go
server/middleware/init.go
server/model/sys_init.go
server/service/sys_initdb.go
servcer/utils/init_db.go

迁移文件
server/cmd/gva/mysql.go->server/utils/mysql.go

server/utils/init_db.go

@@ -0,0 +1,54 @@
+package utils
+
+import (
+	"database/sql"
+
+	"github.com/spf13/viper"
+)
+
+//@author: [songzhibin97](https://github.com/songzhibin97)
+//@function: CreateTable
+//@description: 创建数据库(mysql)
+//@param: dsn string, driver string, createSql
+//@return: error
+
+func CreateTable(dsn string, driver string, createSql string) error {
+	db, err := sql.Open(driver, dsn)
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+	if err = db.Ping(); err != nil {
+		return err
+	}
+	_, err = db.Exec(createSql)
+	return err
+}
+
+//@author: [songzhibin97](https://github.com/songzhibin97)
+//@function: WriteConfig
+//@description: 回写配置
+//@param:
+//@return: error
+
+func WriteConfig(viper *viper.Viper, conf map[string]interface{}) error {
+	for k, v := range conf {
+		viper.Set(k, v)
+	}
+	return viper.WriteConfig()
+}
+
+//@author: [Songzhibin97](https://github.com/Songzhibin97)
+//@function: InitDB
+//@description: 初始化db
+//@param:
+//@return: error
+
+func InitDB() {
+	Mysql.CheckDatabase()
+	Mysql.CheckUtf8mb4()
+	Mysql.Info()
+	Mysql.Init()
+	Mysql.AutoMigrateTables()
+	Mysql.InitData()
+}