Move app template files

This is a PR for work in progress, to separate the moving of the app template files into their own folder, from the code changes to support the new location.

tl;dr:

- Moved \_\_HybridTemplateAppName__/ to app_template_files/__HybridTemplateAppFiles__/
- Moved \_\_NativeTemplateAppName__/ to app_template_files/__NativeTemplateAppFiles__/
- Moved createApp.sh to app_template_files/createApp.sh.base