Add C++ unit tests run after build in CI

Author: Argmaster

.github/workflows/multiplatform_build.yaml

@@ -107,3 +107,14 @@ jobs:
         with:
           name: build-${{ github.sha }}-${{ matrix.os }}-${{ matrix.python-version }}
           path: ./dist/*
+
+      - if: startsWith(matrix.os, 'ubuntu')
+        name: Add virtual environment binaries to PATH
+        run: echo echo "$(poetry env info --path)/bin" >> "$GITHUB_PATH
+
+      - if: startsWith(matrix.os, 'windows')
+        name: Add virtual environment binaries to PATH
+        run: echo echo "$(poetry env info --path)/Scripts" >> "$GITHUB_PATH
+
+      - name: Run unit tests
+        run: poetry run poe ctest