chore: code coverage

Author: DiogoRibeiro7

.github/workflows/test.yml

@@ -29,3 +29,9 @@ jobs:
 
       - name: Run tests
         run: poetry run pytest
+        
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          files: coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}  # optional if public repo

README.md

@@ -1,5 +1,7 @@
 # gen_surv
 
+![Coverage](https://codecov.io/gh/<your-user>/<your-repo>/branch/main/graph/badge.svg)
+
 **gen_surv** is a Python package for simulating survival data under a variety of models, inspired by the R package [`genSurv`](https://cran.r-project.org/package=genSurv). It supports data generation for:
 
 - Cox Proportional Hazards Models (CPHM)