add blas-devel output

[minrk]

metapackage for runtime dependency on compilation/linking

ref: https://github.com/conda-forge/blas-feedstock/pull/39

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• It looks like the 'libblas' output doesn't have any tests.
• It looks like the 'libcblas' output doesn't have any tests.
• It looks like the 'liblapack' output doesn't have any tests.
• It looks like the 'liblapacke' output doesn't have any tests.
• It looks like the 'blas-devel' output doesn't have any tests.

[isuruf]

Thanks