blocks/Math: porting the math block-family ( + vast and edge tests)

[KrxGu]

75% of MATH headers were ported and are now compiling/building under GR-4 (AddConst, SubtractConst, MultiplyConst, DivideConst, Add, Subtract, Multiply, Divide, Max, Min, And, Or, Xor, Negate, Not, Abs, Integrate, Argmax. ) Along with their vast test cases. Tried my best to keep it optimized and minimal so that we don't need many templates for header files.

[jsallay]

I think the code is in good shape, but we need to get the CI jobs passing now. Look compiler errors.

[RalphSteinhagen]

@KrxGu

Please rebase and bump.

Also, please keep the code together, structured and as concise as possible. Splitting the math header files isn't a good optimisation. See my other comments above. You are nearly there ...