Fix install path for fortran module and export name

[rdbisme]

The example CMakeLists for the fortran interface was not working outside of the Mutation++ build tree because the only target exported was named mutation++_fortran and not mutation++::fortran_interface as shown in the CMakeLists.txt.shared in interface/fortran. Now it's fixed

Also the Fortran module file was installed in the wrong include dir

[codecov[bot]]

Codecov Report

Merging #178 (b2a5fe9) into master (c2e1ba7) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #178   +/-   ##
=======================================
  Coverage   71.22%   71.22%           
=======================================
  Files         135      135           
  Lines        8972     8972           
=======================================
  Hits         6390     6390           
  Misses       2582     2582           

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[rdbisme]

(Also release 1.0.6 such that I can upload also the Macports port)

[rdbisme]

Bump! :)

[jbscoggi]

Thanks @rubendibattista!