move the parse.inc in field_manager to include directory

[rem1776]

Description
Moves the parse.inc file into the field_manager's include directory to appease flang-based compilers building with cmake. Should really be there anyway.

Fixes #1739

How Has This Been Tested?
make distcheck on amd box with nvhpc + gnu

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

[mathomp4]

Ohh. I didn't think of moving it. I guess because I was afraid to go near the autotools stuff 😄