Release Apache SkyWalking Rust 0.5.0

SkyWalking Rust 0.5.0 is released. Go to downloads page to find release tars.

What’s Changed

• Add management support. by @jmjoy in https://github.com/apache/skywalking-rust/pull/48
• Add missing_docs lint and supply documents. by @jmjoy in https://github.com/apache/skywalking-rust/pull/49
• Add authentication and custom intercept support. by @jmjoy in https://github.com/apache/skywalking-rust/pull/50
• Bump to 0.5.0. by @jmjoy in https://github.com/apache/skywalking-rust/pull/51