✨ adding ability to get a APIReader from the client.

Adding a new interface `APIClient` to expose as part of the client
a non caching reader interface.

fixes kubernetes-sigs#180
fixes kubernetes-sigs#245

Author: Shawn Hurley

pkg/client/client.go

@@ -144,6 +144,10 @@ func (c *client) Status() StatusWriter {
 	return &statusWriter{client: c}
 }
 
+func (c *client) APIReader() Reader {
+	return c
+}
+
 // statusWriter is client.StatusWriter that writes status subresource
 type statusWriter struct {
 	client *client