docs: added auto-deployment for documentation website

.github/workflows/documentation.yml

@@ -0,0 +1,56 @@
+name: documentation
+
+on:
+  pull_request:
+    branches:
+      - website
+  push:
+    branches:
+      - website
+
+jobs:
+  checks:
+    if: github.event_name != 'push'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+      - name: Test Build
+        run: |
+          if [ -e yarn.lock ]; then
+            yarn install --frozen-lockfile
+          elif [ -e package-lock.json ]; then
+            npm ci
+          else
+            npm i
+          fi
+          npm run build
+  deploy:
+    if: github.event_name != 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+      - uses: webfactory/ssh-agent@v0.5.0
+        with:
+          ssh-private-key: ${{ secrets.GH_PAGES_DEPLOY }}
+      - name: Release to GitHub Pages
+        env:
+          USE_SSH: true
+          GIT_USER: git
+          CURRENT_BRANCH: website
+        run: |
+          git config --global user.email "gorhom@me.com"
+          git config --global user.name "gorhom"
+          if [ -e yarn.lock ]; then
+            yarn install --frozen-lockfile
+          elif [ -e package-lock.json ]; then
+            npm ci
+          else
+            npm i
+          fi
+          npm run deploy