test: Ignore tmp folder in .gitignore

Author: maxreichmann

.gitignore

@@ -69,4 +69,7 @@ internal/documentation/.vitepress/cache
 internal/documentation/dist
 internal/documentation/schema/*
 internal/documentation/docs/api
-internal/documentation/tmp
+internal/documentation/tmp
+
+# E2E-tests
+internal/e2e-tests/tmp