chore(ci): switch to GitHub Actions

.github/workflows/tester.yml

@@ -0,0 +1,22 @@
+name: Tester
+
+on: [push, pull_request]
+
+jobs:
+  linter:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js
+      uses: actions/setup-node@v3
+    - name: Install Dependencies
+      run: npm install
+    - run: npm run eslint
+    - name: Coverage
+      run: npx nyc --reporter=lcovonly npm run test
+      env:
+        CI: true
+    - name: Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -1,6 +1,6 @@
 # FTP deployer
 
-[![Build Status](https://travis-ci.org/hexojs/hexo-deployer-ftpsync.svg?branch=master)](https://travis-ci.org/hexojs/hexo-deployer-ftpsync)
+[![Build Status](https://img.shields.io/github/actions/workflow/status/hexojs/hexo-deployer-ftpsync/tester.yml?branch=master&label=test)](https://github.com/hexojs/hexo-deployer-ftpsync/actions?query=workflow%3ATester)
 [![NPM version](https://badge.fury.io/js/hexo-deployer-ftpsync.svg)](https://www.npmjs.com/package/hexo-deployer-ftpsync)
 
 Deploy your site via FTP.