Add github workflow test file

.github/workflows/linux_hipsycl.yaml

@@ -0,0 +1,25 @@
+name: hipSYCL test
+
+on: [push]
+
+jobs:
+  test-with-hipsycl:
+    name: Run tests with hipSYCL
+    strategy:
+      matrix:
+        clang_version: [13]
+        rocm_version: ['5.1.1']
+        os: [ubuntu-20.04]
+        cuda: [11.0]
+    runs-on: ${{matrix.os}}
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: 'recursive'
+    - name: install ROCm
+      run: |
+        sudo apt install libnuma-dev cmake unzip
+        wget -q -O - https://repo.radeon.com/rocm/rocm.gpg.key | sudo apt-key add -
+        echo 'deb [arch=amd64] https://repo.radeon.com/rocm/apt/${{matrix.rocm_version}}/ ubuntu main' | sudo tee /etc/apt/sources.list.d/rocm.list
+        sudo apt update
+        sudo apt install rocm-dev