Sentinel Pigeon Adapter

[wchswchs]

Issue Description

Type: feature request

Describe what happened (or what feature you want)

add rpc framework pigeon integration

Anything else we need to know?

pigeon github：https://github.com/dianping/pigeon

[sczyh30]

Hi, would you like to contribute a PR?

[wchswchs]

Hi, would you like to contribute a PR?

yeah

[sczyh30]

Added to Awesome Sentinel list via #781. Available in https://github.com/sentinel-group/sentinel-pigeon.