docs(ci): add coverage and codecov upload

Signed-off-by: Patrick Avery <patrick.avery@kitware.com>

Author: psavery

.codecov.yml

@@ -0,0 +1,4 @@
+coverage:
+  status:
+    project: off
+    patch: off

.github/workflows/test_and_release.yml

@@ -60,7 +60,14 @@ jobs:
       run: |
         pip install .
         pip install -r tests/requirements.txt
-        pytest -s ./tests
+        # Run the tests with coverage so we get a coverage report too
+        pip install coverage
+        coverage run --source . -m pytest .
+        # Print the coverage report
+        coverage report -m
+
+    - name: Upload Coverage to Codecov
+      uses: codecov/codecov-action@v3
 
   test-npm-build:
     runs-on: ubuntu-latest