Provide conanfile.txt per Add-on & version

By design if running conan install as:

$conan install qtnetworkauth/6.0.0@qt/final

Conan will deploy the build artifacts to the current working directory, in addition to the generator files.

If this behavior is not wanted, i.e. only the generator files for consumer are needed we'd need to provide a following file per Add-on & version

conanfile.txt

[requires]
qtnetworkauth/6.0.0@qt/beta

[options]

[generators]
cmake_paths

[imports]

1. if user wants to "deploy" needed files to current working dir
   # generic way to import files from your requirements to your project
   bin, * -> ./bin
   lib, * -> ./lib