Move travis phpunit to github actions

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

.github/workflows/phpunit.yml

@@ -0,0 +1,42 @@
+name: PHPUnit
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - stable*
+
+jobs:
+  php:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        php-versions: ['7.2', '7.3', '7.4']
+        server-versions: ['master']
+
+    name: php${{ matrix.php-versions }} on ${{ matrix.server-versions }}
+    steps:
+      - name: Checkout server
+        uses: actions/checkout@v2
+        with:
+          repository: nextcloud/server
+          ref: ${{ matrix.server-versions }}
+          path: server
+      - name: Checkout current
+        uses: actions/checkout@v2
+        with:
+          path: apps/notestutorial
+      - name: Set up php${{ matrix.php-versions }}
+        uses: shivammathur/setup-php@v1
+        with:
+          php-version: ${{ matrix.php-versions }}
+          tools: phpunit
+          coverage: none
+      - name: Install dependencies
+        run: composer install
+      - name: List directories
+        run: |
+          pwd
+          ls -la