Expose compare package (#2001)

I've needed this outside of ggcr for a while but have been just making
due without.

Signed-off-by: Jon Johnson <[email protected]>

Author: jonjohnsonjr

pkg/crane/crane_test.go

@@ -28,12 +28,12 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/google/go-containerregistry/internal/compare"
 	"github.com/google/go-containerregistry/pkg/authn"
 	"github.com/google/go-containerregistry/pkg/crane"
 	"github.com/google/go-containerregistry/pkg/name"
 	"github.com/google/go-containerregistry/pkg/registry"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
+	"github.com/google/go-containerregistry/pkg/v1/compare"
 	"github.com/google/go-containerregistry/pkg/v1/empty"
 	"github.com/google/go-containerregistry/pkg/v1/mutate"
 	"github.com/google/go-containerregistry/pkg/v1/random"

pkg/legacy/tarball/write_test.go

@@ -24,9 +24,9 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/google/go-containerregistry/internal/compare"
 	"github.com/google/go-containerregistry/pkg/name"
 	v1 "github.com/google/go-containerregistry/pkg/v1"
+	"github.com/google/go-containerregistry/pkg/v1/compare"
 	"github.com/google/go-containerregistry/pkg/v1/mutate"
 	"github.com/google/go-containerregistry/pkg/v1/partial"
 	"github.com/google/go-containerregistry/pkg/v1/random"

internal/compare/doc.go renamed to pkg/v1/compare/doc.go

@@ -27,8 +27,8 @@ import (
 	api "github.com/docker/docker/api/types/image"
 
 	"github.com/docker/docker/api/types"
-	"github.com/google/go-containerregistry/internal/compare"
 	"github.com/google/go-containerregistry/pkg/name"
+	"github.com/google/go-containerregistry/pkg/v1/compare"
 	"github.com/google/go-containerregistry/pkg/v1/tarball"
 	"github.com/google/go-containerregistry/pkg/v1/validate"
 )