crane/gcrane: add pages (#13853)

pages/common/crane-validate.md

@@ -0,0 +1,24 @@
+# crane validate
+
+> Validate that an image is well-formed.
+> More information: <https://github.com/google/go-containerregistry/blob/main/cmd/crane/doc/crane_validate.md>.
+
+- Validate an image:
+
+`crane validate`
+
+- Skip downloading/digesting layers:
+
+`crane validate --fast`
+
+- Name of remote image to validate:
+
+`crane validate --remote {{image_name}}`
+
+- Path to tarball to validate:
+
+`crane validate --tarball {{path/to/tarball}}`
+
+- Display help:
+
+`crane validate {{-h|--help}}`