feat: 优化web

internal/iam/repository/errors.go

@@ -0,0 +1,10 @@
+package repository
+
+import "errors"
+
+var (
+	ErrNotFound      = errors.New("not found")
+	ErrConflict      = errors.New("conflict")
+	ErrInvalidState  = errors.New("invalid state")
+	ErrForbidden     = errors.New("forbidden")
+)