Replace configuration settings in FpConfig.h with FPP model elements

[ekswang]

Related Issue(s)	n/a
Has Unit Tests (y/n)	n/a
Documentation Included (y/n)	n/a
Generative AI was used in this contribution (y/n)	n

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Change Description

This converts most of the macro constant (integer type) definitions in FpConfig.h to FPP constant definitions.

Rationale

This provide better accessibility to the constant definitions.

Testing/Review Recommendations

This went through the Ref build process (Ref app executed as expected) and subjected to CI checks.

Future Work

N/A

AI Usage (see policy)

N/A

[ekswang]

There are 2 failures on external repo checks due to changes made to FpConfig.h that is not reflected in that repo.