Drop gilbert-sdk #72
Description
Long time ago, project moved all common interfaces into a separate library - gilbert-sdk library to share data structures between host and plugins.
Initial motivation was to share them between host and Go plugins, but as time showed - bet on Go plugins was a mistake as this Go feature is unmaintained and has compatibility problems if binaries use different Go or third-party library versions.
As we're planing to design a different plugin system from scratch, this repo is no longer needed.
All sdk package references should be removed.