[SMPC] Use floating point

[gmuraru]

Feature Description

For the moment, there is no use of the FixedPrecisionTensor (FPT) class - and because of this, we cannot use floating-point numbers in our operations.

Make use of the FPT in the Tensor Chain such that we will be able to extend the current MPC functionality.

Is your feature request related to a problem?

• Yes, being able to use Floating Point numbers when doing MPC

• If there are any questions ping me on the slack channel.