build additional example as default

Author: TimSiebert1

.github/workflows/ci.yml

@@ -56,6 +56,7 @@ jobs:
             -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
             -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
             -DENABLE_DOCEXA=1
+            -DENABLE_ADDEXA=1
             -S ${{ github.workspace }}
 
         - name: Configure and build ADOL-C (Windows)