Add hex representation of floats in DESYNC output

[malleoz]

Shows the hex representation of floats in the DESYNC output. Also avoid imprecise printing of the numeric representation by using %g instead of %f.

I created a helper function since we will likely have to perform this operation very often for debugging.

[vabold]

To my understanding, %g has the same level of precision as %f, except %e can be introduced if the representation is shorter.

[malleoz]

Hmm yeah not sure why I wrote that. %g guarantees that the string representation is the minimum string required to precisely represent the number

[vabold]

Failing build is due to the updated GitHub action not being run until after merge.