Move cmake package description into AddPackageFlags.cmake files

Simon Praetoriusrequested to merge
feature/cmake-package-properties into master

Summary

The cmake function set_package_properties should be called only once. Thus, it should be moved to the Add<package>Flags.cmake file that can be protected from multiple includes.

Additionally, the handling of BLAS and Lapack is moved into its own AddBLASLapckaFlags.cmake file for consistency and to cleanup the DuneCommonMacros.

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