fix(storage): add indexes for auth.tokens (#5259)

* fix(storage): add indexes for `auth.tokens`

* refactor: naming

cmd/setup/08.go

@@ -0,0 +1,25 @@
+package setup
+
+import (
+	"context"
+	"database/sql"
+	_ "embed"
+)
+
+var (
+	//go:embed 08.sql
+	tokenIndexes08 string
+)
+
+type AuthTokenIndexes struct {
+	dbClient *sql.DB
+}
+
+func (mig *AuthTokenIndexes) Execute(ctx context.Context) error {
+	_, err := mig.dbClient.ExecContext(ctx, tokenIndexes08)
+	return err
+}
+
+func (mig *AuthTokenIndexes) String() string {
+	return "08_auth_token_indexes"
+}