add: CORS

go.mod

@@ -11,9 +11,18 @@ require (
 	gorm.io/gorm v1.25.10
 )
 
-require github.com/kelseyhightower/envconfig v1.4.0
+require (
+	github.com/gin-contrib/cors v1.7.2
+	github.com/kelseyhightower/envconfig v1.4.0
+	github.com/mocktools/go-smtp-mock/v2 v2.3.1
+	github.com/stretchr/testify v1.9.0
+)
 
-require github.com/mocktools/go-smtp-mock/v2 v2.3.1 // indirect
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+)
 
 require (
 	github.com/bytedance/sonic v1.11.9 // indirect