In CMake, install BLAS::BLAS and LAPACK::LAPACK

[weslleyspereira]

Attempt to close #483.

Currently, FindLAPACK in CMake offers two ways to link LAPACK libraries:

1. use the variable LAPACK_LIBRARIES, an "uncached list of libraries (using full path name) to link against to use LAPACK".
2. use the target LAPACK::LAPACK, which is a CMake target.

In current version of LAPACK, we install a target ${LAPACKLIB}, where LAPACKLIB is a variable that has to do with the name of the library installed in the system.

This PR changes the installation to LAPACK::LAPACK which agrees with FindLAPACK from CMake. The variable LAPACK_LIBRARIES remains unchanged. I also install BLAS::BLAS instead of the target ${BLASLIB} to conform with FindBLAS from CMake.

Notice that the only thing this PR does is to rename of two CMake variables (3, if we consider LAPACK::TMGLIB).

Comments are welcome!

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (0c44dd4) 0.00% compared to head (cd20f88) 0.00%.

❗ Current head cd20f88 differs from pull request most recent head c819999. Consider uploading reports for the commit c819999 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #840   +/-   ##
=======================================
  Coverage    0.00%    0.00%           
=======================================
  Files        1908     1908           
  Lines      186962   186962           
=======================================
  Misses     186962   186962           

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.