Restore CI (switch travis/appveyor to github)

While at it, fix badge from low-res PNG to SVG and use current
preferred URL per https://gruntjs.com/built-with-grunt-badge.

Author: Krinkle

.github/workflows/test.yml

@@ -0,0 +1,35 @@
+name: Tests
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  FORCE_COLOR: 2
+
+jobs:
+  run:
+    name: Node ${{ matrix.node }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        node: [10, 16, 18, 20, 22]
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node }}
+
+      - run: npm install
+
+      - run: npm test

.travis.yml

@@ -1,6 +1,5 @@
 # grunt-legacy-log-utils
 > Static methods for the Grunt 0.4.x logger.
 
-[![Build Status: Linux](https://travis-ci.org/gruntjs/grunt-legacy-log-utils.svg?branch=master)](https://travis-ci.org/gruntjs/grunt-legacy-log-utils)
-[![Build Status: Windows](https://ci.appveyor.com/api/projects/status/a6s4cy3fcbl33hnp?svg=true)](https://ci.appveyor.com/project/gruntjs/grunt-legacy-log-utils)
-[![Built with Grunt](https://cdn.gruntjs.com/builtwith.png)](http://gruntjs.com/)
+[![Build Status](https://github.com/gruntjs/grunt-legacy-log-utils/workflows/Tests/badge.svg)](https://github.com/gruntjs/grunt-legacy-log-utils/actions?workflow=Tests)
+[![Built with Grunt](https://gruntjs.com/builtwith.svg)](https://gruntjs.com/)

README.md

@@ -32,7 +32,6 @@
   },
   "devDependencies": {
     "grunt": "~1.2.1",
-    "grunt-cli": "~1.3.2",
     "grunt-contrib-jshint": "~2.1.0",
     "grunt-contrib-nodeunit": "~2.1.0",
     "grunt-contrib-watch": "~1.1.0"