Pact plugin driver library for Rust

Pact support library that provides an interface for interacting with Pact plugins

State of implementation

• [X] The ability to find plugins.
• [X] Load plugins and extract the plugin manifests that describe what the plugin provides.
• [X] Provide a catalogue of features provided by the plugins.
• [ ] Provide a messaging bus to facilitate communication between the language implementation and the plugins.
• [X] Manage the plugin lifecycles.

Building the Rust driver

The Rust driver is built with Cargo. The build can be run with cargo build, but there is a test DriverPactTest that requires a Protobuf plugin to work. Either skip or disable that test, or install the prototype Protobuf plugin before running the build.