Docs: Falco Plugins Go SDK Walkthrough

Introduction The Go SDK provides prebuilt constructs and definitions that help developing plugins by abstracting all the complexities related to the bridging between the C and the Go runtimes. The Go SDK takes care of satisfying all the plugin framework requirements without having to deal with the low-level details, by also optimizing the most critical code paths. The SDK allows developers to choose either from a low-level set of abstractions, or from a more high-level set of packages designed for simplicity and ease of use.