docs: update README badges and add coverage upload step in release workflow

.github/workflows/release.yml

@@ -22,6 +22,13 @@ jobs:
       - run: npm run lint
       - run: npm test
       - run: npm run test-types
+      - name: Generate coverage
+        run: make coverage
+      - name: Upload coverage to Coveralls
+        uses: coverallsapp/github-action@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          file: coverage/lcov.info
 
   publish:
     needs: test

README.md

@@ -1,4 +1,4 @@
-[![build status](https://travis-ci.org/jochen-schweizer/express-prom-bundle.png)](https://travis-ci.org/jochen-schweizer/express-prom-bundle) [![Coverage Status](https://coveralls.io/repos/github/jochen-schweizer/express-prom-bundle/badge.svg?branch=master)](https://coveralls.io/github/jochen-schweizer/express-prom-bundle?branch=master) [![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://www.tldrlegal.com/l/mit) [![NPM version](https://badge.fury.io/js/express-prom-bundle.png)](http://badge.fury.io/js/express-prom-bundle)
+[![CI](https://github.com/BreizhHardware/express-prom-bundle/actions/workflows/release.yml/badge.svg)](https://github.com/BreizhHardware/express-prom-bundle/actions/workflows/release.yml) [![Coverage Status](https://coveralls.io/repos/github/BreizhHardware/express-prom-bundle/badge.svg?branch=main)](https://coveralls.io/github/BreizhHardware/express-prom-bundle?branch=main) [![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://www.tldrlegal.com/l/mit) [![NPM version](https://badge.fury.io/js/%40breizhhardware%2Fexpress-prom-bundle.png)](http://badge.fury.io/js/%40breizhhardware%2Fexpress-prom-bundle)
 
 # express prometheus bundle