feat: automatic testing

This commit adds a .gitlab-ci.yml file, which is responsible for
defining jobs to be run (in this case only running the test suite)

ref: N25B-65

pyproject.toml

@@ -17,3 +17,11 @@ dependencies = [
     "torch>=2.8.0",
     "uvicorn>=0.37.0",
 ]
+
+[dependency-groups]
+test = [
+    "pytest>=8.4.2",
+    "pytest-asyncio>=1.2.0",
+    "pytest-cov>=7.0.0",
+    "pytest-mock>=3.15.1",
+]