refactor: Move integration tests from 'examples/' into 'tests/' (#5367)

This change moves `examples/example` into `tests/conan` to make it clear it is an integration test, and adjusts the `conan` CI job accordingly

.github/workflows/clang-format.yml

@@ -20,7 +20,7 @@ jobs:
           sudo apt-get update
           sudo apt-get install clang-format-${CLANG_VERSION}
       - name: Format first-party sources
-        run: find include src -type f \( -name '*.cpp' -o -name '*.hpp' -o -name '*.h' -o -name '*.ipp' \) -exec clang-format-${CLANG_VERSION} -i {} +
+        run: find include src tests -type f \( -name '*.cpp' -o -name '*.hpp' -o -name '*.h' -o -name '*.ipp' \) -exec clang-format-${CLANG_VERSION} -i {} +
       - name: Check for differences
         id: assert
         run: |

.github/workflows/nix.yml

@@ -288,7 +288,7 @@ jobs:
           echo "reference=${reference}" >> "${GITHUB_ENV}"
       - name: build
         run: |
-          cd examples/example
+          cd tests/conan
           mkdir ${build_dir}
           cd ${build_dir}
           conan install .. --output-folder . \