guided mode

[yuxuanwu1234567]

IF YOU DON'T REMOVE THESE FOUR LINES, THEN YOUR REQUEST WILL BE CLOSED AUTOMATICALLY
Questions and user problems should be directed at the forum (http://discuss.ardupilot.org)
Please do a careful search before opening this, there are already a lot of feature requests
If there was a previous discussion in the forum, link to it

Feature request

Is your feature request related to a problem? Please describe.
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Describe the solution you'd like
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Describe alternatives you've considered
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Platform
[ ] All
[ ] AntennaTracker
[ ] Copter
[ ] Plane
[ ] Rover
[ ] Submarine

Additional context
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