ci: rename job and add install step

Author: rettinghaus

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       run: ruff format --diff --target-version=py39
       continue-on-error: true
 
-  test:
+  build:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
@@ -39,4 +39,5 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - run: pip install build setuptools wheel
-      - run: python -m build
+      - run: python -m build
+      - run: python -m pip install .