Support Rust-based Python packages

[a-ovchinnikov]

Certain packages (like cryptography and pydantic-core) require Rust support to
be built from sources. Pip package manager should be amended to detect such packages
and to invoke Rust package manager to vendor dependencies for them and to collect
all necessary crates. Further, the output of Rust PM must be made available to pip.
Given that a) all crates are collected and are present in a known location
and b) Cargo and Rust are both present in a build system pip should be able to
build such packages as usual.