all: make goimports happy

run goimports with -local flag. separates cue packages and other.
  $ goimports -w -local cuelang.org/go .

Change-Id: I3849b916fde18e4f62789cfe5220e12a84aaddbc
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/4501
Reviewed-by: Marcel van Lohuizen <mpvl@golang.org>
diff --git a/encoding/protobuf/parse.go b/encoding/protobuf/parse.go
index 917f7fd..a58943d 100644
--- a/encoding/protobuf/parse.go
+++ b/encoding/protobuf/parse.go
@@ -26,12 +26,13 @@
 	"text/scanner"
 	"unicode"
 
+	"github.com/emicklei/proto"
+
 	"cuelang.org/go/cue/ast"
 	"cuelang.org/go/cue/errors"
 	"cuelang.org/go/cue/parser"
 	"cuelang.org/go/cue/token"
 	"cuelang.org/go/internal/source"
-	"github.com/emicklei/proto"
 )
 
 func (s *Extractor) parse(filename string, src interface{}) (p *protoConverter, err error) {