Create a CPP implementation of TTL #37

[chrisgearing]

The C implementation of TTL is really an object-orientated CPP implementation written in C.

The outcome for the use is good, with the ability to work well with Typed-Tensors, but the developer of TTL has to work with quite difficult macros. The end user could also benefit from a CPP implementation.

Create a Prototype implementation.

At present a CPP (not opencl) version is implemented that makes Duplex buffering work.

[CLAassistant]

All committers have signed the CLA.