Release go fn v0.0.1

This release is for Go SDK github.com/GoogleContainerTools/kpt-functions-sdk/go/[email protected]

This version kick-starts the Go SDK to write your own KRM functions in as less as ~10 lines of code.

• The SDK converts STDIN to a ResourceList object and provides well handling around ResourceList object read/write. The ResourceList specification is defined here
• The SDK defines KubeObject which is the smallest unit to represent a KRM resource. KubeObject methods can be called similar to unstructured.Unstructured. For example, you can get/set the MetaType and NameType fields of KubeObejct via GetName SetNamespace, GetAnnotation, GetApiVersion "IsGVK", or get/set a specific field path via NestedStringOrDie SetNestedStringMap, etc