Would be useful if cherry-picker messages were more prominent

As people have learned I am not always the most observant person in the world. My initial attempts to use cherry-picker were complicated by the fact that I paid attention to messages from git cherry-pick, not cherry-picker's own messages. It would be nice if the message sources were better distinguished, either by dimming the messages from git cherry-pick or by coloring the messages from cherry-picker.

If you think something like this would be useful, I could work on a PR. It seems that any desired changes would be straightforward, as current console output already uses click.echo().

首先定位使用 click.echo() 的 cherry-picker 控制台输出，然后将其中的消息与 issue 中描述的 git cherry-pick 输出进行比较。当 cherry-picker 的消息能够在视觉上与 git cherry-pick 的消息区分开，并且相关输出路径都有覆盖时，即表示完成。