Add documentation and style check workflow

.github/workflows/documentation.yml

@@ -0,0 +1,21 @@
+name: documentation
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'doc/*'
+
+jobs:
+  build:
+    continue-on-error: true
+    runs-on: ubuntu-latest
+    container: "lammps/buildenv:fedora32_mingw"
+    steps:
+      - uses: actions/checkout@master
+      - name: Generate HTML
+        run: make -C doc -j 2 html
+      - name: Generate PDF
+        run: make -C doc -j 2 pdf
+      - name: Check Spelling
+        run: make -C doc -j 2 spelling

.github/workflows/style.yml

@@ -0,0 +1,42 @@
+name: style
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  check_whitespace:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python 3.6
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.6
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade pyyaml
+          sudo apt install -y ninja-build
+      - uses: actions/checkout@master
+      - name: Configure
+        run: cmake -B build -G Ninja -D Python3_EXECUTABLE=$(which python) -S cmake
+      - name: Check for whitespace errors
+        run: cmake --build build --target check-whitespace
+
+  check_permissions:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python 3.6
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.6
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade pyyaml
+          sudo apt install -y ninja-build
+      - uses: actions/checkout@master
+      - name: Configure
+        run: cmake -B build -G Ninja -D Python3_EXECUTABLE=$(which python) -S cmake
+      - name: Check file permissions
+        run: cmake --build build --target check-permissions