MPT-14713 E2E TDR Proof of concept

- Moved unit tests from `tests/` to `tests/unit/`
- Added dummy e2e test in `tests/e2e/`
- Updated pytest setup to not run tests mark as e2e
- Added docker image to run e2e tests with `docker compose run --rm e2e`
- Added `pytest-rerunfailures` dev dependency to rerun failed api calls (flaky tests)

Author: albertsola

.github/workflows/pr-build-merge.yml

@@ -30,7 +30,7 @@ jobs:
       run: docker compose run --service-ports app_test
 
     - name: "Run E2E test"
-      run: docker compose run --service-ports app_test
+      run: docker compose run --service-ports e2e
 
     - name: "Run SonarCloud Scan"
       uses: SonarSource/sonarqube-scan-action@master