Feat/rust tools

[YOU54F]

Adds

• pact_mock_server_cli (for v3/v4 pact consumer side testing inc plugins)
• pact-stub-server (for v3/v4 pact stub support)
• pact_verifier_cli (for v3/v4 pact verification inc plugins)

Drops

• x86 windows support. (no equiv rust executables)

Tree looks like

├── pact
├── pactflow
├── pact-broker
├── pact-message
├── pact-mock-service
├── pact-stub-service
├── pact-provider-verifier
├── pact_mock_server_cli
├── pact-stub-server
├── pact_verifier_cli
└── pact-plugin-cli

I propose that we also make this repo more generic, rather than pact-ruby-standalone, drop the ruby prefix

1. rename the repo to pact-standalone or pact-cli
   1. With long term view of deprecating ruby tooling, and replacing with rust. Only pact_broker-client / pactflow client require porting
2. rename homebrew-pact-ruby-standalone to homebrew-pact-standalone or homebrew-pact-cli
3. rename pact-ruby-cli repo to pact-cli-docker
   1. after playing Add rust verifier and stub server to image pact-ruby-cli#95

Still to do

• Docs
  • Repo
  • Website