add badges

README.md

@@ -1 +1,8 @@
-# haystack-experimental
+# haystack-experimental
+
+[![PyPI - Version](https://img.shields.io/pypi/v/haystack-experimental.svg)](https://pypi.org/project/haystack-experimental)
+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/haystack-experimental.svg)](https://pypi.org/project/haystack-experimental)
+[![Tests](https://github.com/deepset-ai/haystack-experimental/actions/workflows/tests.yml/badge.svg)](https://github.com/deepset-ai/haystack-experimental/actions/workflows/tests.yml)
+[![Project release on PyPi](https://github.com/deepset-ai/haystack-experimental/actions/workflows/pypi_release.yml/badge.svg)](https://github.com/deepset-ai/haystack-experimental/actions/workflows/pypi_release.yml)
+[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)
+[![Checked with mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://mypy-lang.org/)