Move inverse_permutation to mpp_mod

[J-Lentz]

Description
Move inverse_permutation from interpolator_mod to mpp_mod so that it can be more cleanly reused by other parts of the codebase. The purpose of this subroutine is to convert between (memory dimension) --> (logical dimension) and (logical dimension) --> (memory dimension) maps.

How Has This Been Tested?
CI only.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• New check tests, if applicable, are included
• make distcheck passes

[uramirez8707]

Thanks. Looks good to me.