feat(database): add mysql support (#39)

internal/database/db.go

@@ -10,12 +10,15 @@ var (
 type DriverType = string
 
 const Sqlite = "sqlite"
+const Mysql = "mysql"
 
 func InitDB(driver DriverType, dsn string) (err error) {
 	Driver = driver
 	switch driver {
 	case Sqlite:
 		DB, err = NewSqlite3(dsn)
+	case Mysql:
+		DB, err = NewMysql(dsn)
 	}
 	return err
 }

internal/database/mysql.go

@@ -0,0 +1,14 @@
+package database
+
+import (
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+)
+
+func NewMysql(dsn string) (*gorm.DB, error) {
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		return nil, err
+	}
+	return db, nil
+}