Add CI workflow for running tests

.github/workflows/tests.yml

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2022-2024 KTH Royal Institute of Technology.
+#
+# invenio-subjects-nasa is free software, you can redistribute it and/or
+# modify it under the terms of the MIT License; see LICENSE file details.
+
+name: CI
+
+on:
+  workflow_dispatch:
+    inputs:
+      reason:
+        description: 'Reason'
+        required: false
+        default: 'Manual trigger'
+
+jobs:
+  Tests:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+          python-version: [3.9]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Generate dependencies
+        run: |
+          pip install -e ".[tests]"
+          pip freeze
+
+      - name: Run tests
+        run: |
+          ./run-tests.sh