add github actions to make

CMakeLists.txt

@@ -124,3 +124,15 @@ target_link_libraries(VocalSynth
         juce::juce_recommended_config_flags
         juce::juce_recommended_lto_flags
         juce::juce_recommended_warning_flags)
+
+if ((DEFINED ENV{CI}))
+    set (env_file "${PROJECT_SOURCE_DIR}/.env")
+    message ("Writing ENV file for CI: ${env_file}")
+
+    # the first call truncates, the rest append
+    file(WRITE  "${env_file}" "PROJECT_NAME=${PROJECT_NAME}\n")
+    file(APPEND "${env_file}" "PRODUCT_NAME=${PRODUCT_NAME}\n")
+    file(APPEND "${env_file}" "VERSION=${CURRENT_VERSION}\n")
+    file(APPEND "${env_file}" "BUNDLE_ID=${BUNDLE_ID}\n")
+    file(APPEND "${env_file}" "COMPANY_NAME=${COMPANY_NAME}\n")
+endif ()