Make it possible to build dpbench without having to install and build all included implementations

[diptorupd]

Currently, building dpbench requires installing all dependencies for each framework and implementation bundled in-tree. This includes the native dpcpp implementations.

We should make it possible to build and install dpbench with only the core infrastructure. It will make it much simpler for others to use the infrastructure and not have to install and build all benchmarks if they do not want to do so.

[ZzEeKkAa]

#268 allows to build dpbench without SYCL(DPCPP).
We still need to upgrade infrastructure to skip frameworks if their dependencies are not installed.