feat(chore): add coverage reports

Create coverage reports and add report as PR comment

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: Tests
+name: Test & Coverage
 
 on: [push]
 
@@ -7,9 +7,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js
+      - name: Setup node
         uses: actions/setup-node@v1
         with:
           node-version: '10.x'
       - run: yarn
+        name: Install dependencies
       - run: yarn test
+        name: Run tests
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      #- uses: romeovs/lcov-reporter-action@v0.2.11
+      #  name: Post code coverage report
+      #  with:
+      #    github-token: ${{ secrets.GITHUB_TOKEN }}
+      #    lcov-file: ./coverage/lcov.info

package.json

@@ -54,7 +54,7 @@
   "scripts": {
     "posttest": "eslint . --ext .ts --config .eslintrc --fix",
     "prepack": "rm -rf lib && tsc -b && oclif-dev readme",
-    "test": "nyc --extension .ts mocha --forbid-only \"test/**/*.test.ts\"",
+    "test": "nyc --reporter=text --reporter=lcov --extension .ts mocha --forbid-only \"test/**/*.test.ts\"",
     "test:watch": "nyc --extension .ts mocha --forbid-only \"test/**/*.test.ts\" --watch",
     "build": "./node_modules/.bin/tsc",
     "version": "oclif-dev readme && git add README.md",