ci: Add build and tests

.github/workflows/ci.yaml

@@ -0,0 +1,19 @@
+# Copyright 2024 ETH Zurich and University of Bologna.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+name: Test PyFlexFloat library
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Build and test package
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Build
+        run: pip install .
+      - name: Test
+        run: ./test/test.py