refactor(output): share the JSON, created-resource and batch tails

Mutations end with a.jsonResult or a.created instead of hand-rolled
--json branches, the two identical jsonResult/writeMutationJSON helpers
become one, and writeBatchJSON checks --json itself so batch commands
share one tail.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/pull_review.go

@@ -268,13 +268,10 @@ func ownReview(pull services.Pull, t target, state string) error {
 // reportReview reports a submitted review, then prints its URL, or the review as JSON.
 func (a *application) reportReview(cmd *cobra.Command, t target, pull services.Pull, item services.Review) error {
 	a.done(cmd, "%s pull request %s", reviewVerbs[item.State], refLabel(t.Repo, pull.Number, pull.Title))
-	switch {
-	case a.options.json != "":
-		return a.writeJSON(cmd, item)
-	case item.URL != "":
-		return a.printURL(cmd, item.URL)
+	if a.options.json == "" && item.URL == "" {
+		return nil
 	}
-	return nil
+	return a.created(cmd, item, item.URL)
 }
 
 // readInlineComments reads the inline comments of --comments-file, a JSON array.
@@ -625,10 +622,7 @@ func (a *application) pullReviewReplyCommand() *cobra.Command {
 			return err
 		}
 		a.done(cmd, "Replied to review comment %d on %s#%d", id, t.Repo, n)
-		if a.options.json != "" {
-			return a.writeJSON(cmd, item)
-		}
-		return a.printURL(cmd, item.URL)
+		return a.created(cmd, item, item.URL)
 	}}
 	cmd.Flags().StringVarP(&body, "body", "b", "", "Reply body")
 	cmd.Flags().StringVarP(&file, "body-file", "F", "", "Read the body from `file`, or - for stdin")