Add lint and static-analysis

.github/workflows/lint.yml

@@ -0,0 +1,38 @@
+name: Lint
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  xml-linters:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: Download schema
+        run: wget https://apps.nextcloud.com/schema/apps/info.xsd
+      - name: Lint info.xml
+        uses: ChristophWurst/xmllint-action@v1
+        with:
+          xml-file: ./appinfo/info.xml
+          xml-schema-file: ./info.xsd
+
+  php-linters:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions: ['7.3', '7.4', '8.0']
+    name: php${{ matrix.php-versions }} lint
+    steps:
+      - name: Checkout
+        uses: actions/checkout@master
+      - name: Set up php${{ matrix.php-versions }}
+        uses: shivammathur/setup-php@master
+        with:
+          php-version: ${{ matrix.php-versions }}
+          coverage: none
+      - name: Lint
+        run: composer run lint

.github/workflows/static-analysis.yml

@@ -0,0 +1,30 @@
+name: Static analysis
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  static-psalm-analysis:
+      runs-on: ubuntu-latest
+      strategy:
+          matrix:
+              ocp-version: [ 'dev-master', 'dev-stable22', 'v21.0.0' ]
+      name: Nextcloud ${{ matrix.ocp-version }}
+      steps:
+          - name: Checkout
+            uses: actions/checkout@master
+          - name: Set up php
+            uses: shivammathur/setup-php@master
+            with:
+                php-version: 7.4
+                tools: composer:v1
+                coverage: none
+          - name: Install dependencies
+            run: composer i
+          - name: Install dependencies
+            run: composer require --dev christophwurst/nextcloud:${{ matrix.ocp-version }}
+          - name: Run coding standards check
+            run: composer run psalm

composer.json

@@ -0,0 +1,9 @@
+{
+    "require-dev": {
+        "psalm/phar": "^4.10"
+    },
+    "scripts": {
+        "lint": "find . -name \\*.php -not -path './vendor/*' -print0 | xargs -0 -n1 php -l",
+        "psalm": "psalm.phar"
+    }
+}