Support floats for all internal number representation

[DocMoebiuz]

Is your feature request related to a problem? Please describe.
MobiFlight handles results of transformations and many internal values as integers. This is more an historical reason rather than a design requirement.

Describe the solution you'd like
Support floats for all internal number representations.

Additional context
For most calculations like modifieres this should already be the case. But some inputActions or output devices should work with floats rather than using integer values.

relates to #1827
relates ro #1571
relates to #1234