Implement all logic on the client side in csvxmlV2.js

For completing the rewrite, translations and some UI work are still
needed.

See #14

public/assets/js/jszip/.github/workflows/pr.yaml

@@ -0,0 +1,58 @@
+name: pull-request
+
+on:
+  pull_request:
+    branches: [ main ]
+  push:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 'lts/*'
+          cache: 'npm'
+
+      - name: Cache Node modules
+        uses: actions/cache@v3
+        id: npm-cache
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+
+      - name: Install dependencies
+        run: |
+          npm install
+          sudo npx playwright install-deps
+
+      - name: Lint
+        run: npm run lint
+      - name: Test
+        run: npm test
+
+      - name: Benchmark
+        run: npm run benchmark | tee benchmark.txt
+
+      - name: Download previous benchmark data
+        uses: actions/cache@v3
+        with:
+          path: ./cache
+          key: ${{ runner.os }}-benchmark
+
+      - name: Store benchmark result
+        uses: benchmark-action/github-action-benchmark@v1
+        with:
+          tool: 'benchmarkjs'
+          output-file-path: benchmark.txt
+          external-data-json-path: ./cache/benchmark-data.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          alert-threshold: '150%'
+          comment-on-alert: true
+          fail-on-alert: true
+          alert-comment-cc-users: '@Stuk'