Add the workflow files for the sparql-conformance webapp

.github/workflows/sparql-conformance-uploader.yml

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+name: Upload conformance tests result
+
+on:
+  workflow_run:
+    workflows: [sparql-conformance]
+    types:
+      - completed
+
+jobs:
+  upload:
+    env:
+          SERVER_URL: https://qlever.cs.uni-freiburg.de/sparql-conformance-uploader
+          API_KEY: ${{ secrets.SPARQL_CONFORMANCE_TOKEN }}
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success'
+    steps:
+      - name: 'Download artifact'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            var artifacts = await github.rest.actions.listWorkflowRunArtifacts({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               run_id: ${{github.event.workflow_run.id }},
+            });
+            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
+              return artifact.name == "conformance-report"
+            })[0];
+            var download = await github.rest.actions.downloadArtifact({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifact.id,
+               archive_format: 'zip',
+            });
+            var fs = require('fs');
+            fs.writeFileSync('${{github.workspace}}/conformance-report.zip', Buffer.from(download.data));
+      - run: unzip conformance-report.zip
+      # Read the metadata into environment variables.
+      - name: "Read github event"
+        run: echo "github_event=`cat event`" >> $GITHUB_ENV
+      - name: "Read PR number"
+        run: echo "pr_number=`cat pr`" >> $GITHUB_ENV
+      - name: "Read Github Ref"
+        run: echo "original_github_ref=`cat github_ref`" >> $GITHUB_ENV;
+      - name: "Read Github SHA"
+        run: echo "commit_sha=`cat sha`" >> $GITHUB_ENV;
+      - name: "Read Github Repository"
+        run: echo "original_github_repository=`cat github_repository`" >> $GITHUB_ENV;
+      - name: "Submit data to server"
+        run: |
+            response=$(curl -s -o temp_response.txt -w "%{http_code}" \
+              -H "x-api-key: $API_KEY" \
+              -H "event: ${{ env.github_event }}" \
+              -H "sha: ${{ env.commit_sha }}" \
+              -H "pr-number: ${{ env.pr_number }}" \
+              -F "file=@${{env.commit_sha}}.json.bz2" \
+              $SERVER_URL/upload)
+
+            echo "Server response:"
+            cat temp_response.txt
+            echo "HTTP Status: $response"
+            if [ "$response" -gt 200 ]; then
+              echo "Server did not respond with status 200. Failing the workflow."
+              exit 1
+            fi

.github/workflows/sparql-conformance.yml

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+name: sparql-conformance
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  merge_group:
+
+jobs:
+  build:
+    env:
+      compiler: clang
+      compiler-version: 16
+      build-type: Release
+      cmake-flags: "-DCMAKE_C_COMPILER=clang-16 -DCMAKE_CXX_COMPILER=clang++-16"
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: "recursive"
+          path: qlever-code
+      - name: Checkout sparql-test-suite-files
+        uses: actions/checkout@v3
+        with:
+          repository: "w3c/rdf-tests"
+          path: sparql-test-suite
+      - name: Checkout qlever-test-suite
+        uses: actions/checkout@v3
+        with:
+          repository: "ad-freiburg/sparql-conformance"
+          path: qlever-test-suite
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.10"
+      - name: Install python dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install requests
+          pip install rdflib
+      - name: Install dependencies
+        uses: ./qlever-code/.github/workflows/install-dependencies-ubuntu
+      - name: Install compiler
+        uses: ./qlever-code/.github/workflows/install-compiler-ubuntu
+        with:
+          compiler: "clang"
+          compiler-version: "16"
+      - name: Create build directory
+        run: mkdir ${{github.workspace}}/qlever-code/build
+      - name: Configure CMake
+        run: cmake -S ${{github.workspace}}/qlever-code/ -B ${{github.workspace}}/qlever-code/build ${{env.cmake-flags}} -DCMAKE_BUILD_TYPE=${{env.build-type}} -DLOGLEVEL=INFO -DUSE_PARALLEL=false
+      - name: Build IndexBuilderMain
+        run: cmake --build ${{github.workspace}}/qlever-code/build --target IndexBuilderMain --config ${{env.build-type}} -- -j $(nproc)
+      - name: Build ServerMain
+        run: cmake --build ${{github.workspace}}/qlever-code/build --target ServerMain  --config ${{env.build-type}} -- -j $(nproc)
+      - name: Execute test suite
+        run: |
+          cd qlever-test-suite
+          python testsuite.py config http://0.0.0.0 7001 ${{github.workspace}}/sparql-test-suite/sparql/sparql11/ ${{github.workspace}}/qlever-code/build/ localhost sparql sparql
+          python testsuite.py extract
+          python testsuite.py ${{ github.sha }}
+          cd ..
+      - name: Save workflow information
+        # Note: If you change any of the filenames here, you also have to change them in `upload-conformance.yml`
+        run : |
+          mkdir -p conformance-report
+          echo ${{ github.event_name }} > ./conformance-report/event
+          echo ${{ github.event.number }} > ./conformance-report/pr
+          echo ${{ github.repository }} > ./conformance-report/github_repository
+          echo ${GITHUB_REF} > ./conformance-report/github_ref
+      - name: Save SHA and conformance report if it is a master commit.
+        if: github.event_name == 'push'
+        run : |
+          echo ${{github.sha}} > ./conformance-report/sha
+          mv ${{ github.workspace}}/qlever-test-suite/results/${{ github.sha }}.json.bz2 conformance-report/${{ github.sha }}.json.bz2
+      - name: Save SHA and conformance report if it is a PR.
+        if: github.event_name == 'pull_request'
+        run : |
+          echo ${{github.event.pull_request.head.sha}} > ./conformance-report/sha
+          mv ${{ github.workspace}}/qlever-test-suite/results/${{ github.sha }}.json.bz2 conformance-report/${{ github.event.pull_request.head.sha }}.json.bz2
+      - name: Upload coverage artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: conformance-report
+          path: conformance-report/