chore: clean up file structure, add github action

.github/workflows/master.yaml

@@ -0,0 +1,29 @@
+name: Node.js 18.x, 20.x build
+
+on:
+  push:
+    branches: [master, feat/v2.0]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    concurrency:
+      group: testbuilds
+      cancel-in-progress: false
+
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm ci
+      - run: npm run build --if-present
+      - run: npm test
+
+      - name: Update Coverage Badge
+        uses: we-cli/coverage-badge-action@main

README.md

@@ -1,7 +1,7 @@
 # ltpa
 
-[![travis build](https://img.shields.io/travis/markusberg/ltpa.svg)](https://travis-ci.org/markusberg/ltpa)
-[![codecov coverage](https://img.shields.io/codecov/c/github/markusberg/ltpa/master.svg)](https://codecov.io/github/markusberg/ltpa)
+[![node.js build](https://github.com/markusberg/ltpa/actions/workflows/master.yaml/badge.svg)](https://github.com/markusberg/ltpa/actions/workflows/master.yaml)
+[![coverage](https://markusberg.github.io/ltpa/badges/coverage.svg)](https://github.com/markusberg/ltpa/actions)
 [![version](https://img.shields.io/npm/v/ltpa.svg)](https://codecov.io/github/markusberg/ltpa)
 [![license](https://img.shields.io/github/license/markusberg/ltpa.svg)](https://www.apache.org/licenses/LICENSE-2.0)