Take care of C# node dockerfiles

[AnnaShaleva]

neo-project/neo-modules#912 is finally merged which means that https://github.com/neo-project/neo is a monorepo. We need to migrate from Dockerfile.sharp.sources.from_binaries and Dockerfile.sharp.sources.from_local_dependencies to a single Dockerfile that allows to build node from the specific revision from sources.

We also need to update Dockerfile.sharp to be able to build released monorepo version.

This issue is relevant for post-3.7.4 versions of Neo node. Depends on neo-project/neo#3232 and neo-project/neo#3244.

[roman-khimov]

We need to digest 3.7.4 first, it already changes a lot.

[AnnaShaleva]

We need to digest 3.7.4 first,

I'm in progress, this issue is for future development.