feat: add upload model

model/upload.go

@@ -0,0 +1,13 @@
+package model
+
+import (
+	"gorm.io/gorm"
+)
+
+type Upload struct {
+	gorm.Model
+	ID        uint `gorm:"primaryKey"`
+	AccountID uint `gorm:"index"`
+	Account   Account
+	Hash      string `gorm:"uniqueIndex"`
+}