Make it a config option whether the Fortran frontend parses bools as bools or ints

From https://github.com/spcl/dace/pull/1736#pullrequestreview-2418963774

> can you please make it a config option whether the frontend parses bools as bools or ints (to ensure compatibility with external functions?) Please also add such a test if possible - it will need a different style of calling it too.

Currently, the Fortran frontend treats `logical` arrays as `int` arrays (i.e., 32 bit), which works just fine if we call the SDFG it from Fortran. On the other hand, C++ or numpy have 8bit representation for boolean. So, we _might_ want to have that representation.