Draft: feat login

types/errors.go

@@ -0,0 +1,8 @@
+package types
+
+import "errors"
+
+var (
+	UsernameConflictError = errors.New("username conflict")
+	RouteNotExistError    = errors.New("route not exist")
+)

types/types.go

@@ -0,0 +1,5 @@
+package types
+
+type (
+	User string
+)