Bazel Rust example workspace

The following example is a minimal example of a simple rust project consisting of a binary, library and external crates. This can be handled by Bazel.

Instructions

1. Clone his repo

2. Change the target in Cargo.toml under [raze] to fit your target

   Mac OSX: target = "x86_64-apple-darwin"

   Linux 64-bit: target = "x86_64-unknown-linux-gnu"

   Windows 64-bit target = "86_64-pc-windows-msvc"

3. cargo install cargo-raze

4. cargo generate-lockfile only needed when there is no Cargo.lock file

5. cargo raze

6. bazel build :hello_world