Add lgtm badges (#48)

README.md

@@ -1,6 +1,8 @@
 [![PyPI version](https://badge.fury.io/py/webviz-core-components.svg)](https://badge.fury.io/py/webviz-core-components)
 [![Build Status](https://travis-ci.org/equinor/webviz-core-components.svg?branch=master)](https://travis-ci.org/equinor/webviz-core-components)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/e5f81735a1a9423eb7be3fee8e2d30ee)](https://www.codacy.com/manual/webviz/webviz-core-components?utm_source=github.com&utm_medium=referral&utm_content=equinor/webviz-core-components&utm_campaign=Badge_Grade)
+[![Total alerts](https://img.shields.io/lgtm/alerts/g/equinor/webviz-core-components.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/equinor/webviz-core-components/alerts/)
+[![Language grade: JavaScript](https://img.shields.io/lgtm/grade/javascript/g/equinor/webviz-core-components.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/equinor/webviz-core-components/context:javascript)
+[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/equinor/webviz-core-components.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/equinor/webviz-core-components/context:python)
 [![Python 3.6 | 3.7 | 3.8](https://img.shields.io/badge/python-3.6%20|%203.7%20|%203.8-blue.svg)](https://www.python.org/)
 [![Code style: black](https://img.shields.io/badge/code%20style-black%20%28Python%29-000000.svg)](https://github.com/psf/black)
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier%20%28JavaScript%29-ff69b4.svg)](https://github.com/prettier/prettier)