Implement fortran unit tests for history infrastructure

### Issue Type

Infrastructure Update

### Issue Description

We need unit testing for the new history infrastructure. This means we need to decide on a build system (possible - https://github.com/dryman/fortran_unit_test?tab=readme-ov-file#specifying-tests-in-cmake) and the structure of the tests.

The original testing implementation can be found here:
https://github.com/peverwhee/CAM-SIMA/tree/history_test

### Will this change answers?

No

### Will you be implementing this yourself?

Yes, but I will need some help