FollowPath: implement path_mode=single and loitering

[janpascal]

Short Description:

Add two features to FollowPath:

• path_mode: 'single' will follow the path only once
• 'loiter' in the json file will cause the bot pause following the path for a while, and instead execute the next task. E.g. if a MoveToFort task is next, the bot will chase pokestops for the indicated number of seconds, and the resume the path

Fixes/Resolves/Closes (please use correct syntax):

• Closes FollowPath: loitering around each waypoint #4662
• Closes FollowPath: execute path only once #4663

[mention-bot]

@janpascal, thanks for your PR! By analyzing the annotation information on this pull request, we identified @alexyaoyang, @binarydepartment and @JaapMoolenaar to be potential reviewers

[alexyaoyang]

This is a great feature which makes the bot more humanized! 👍

Just a few suggestions:

• Can you update the path.json.example to include your latest update?
• Maybe tell the users clearly and explicitly in configurations.md that they need to have other Move tasks in their task list or else the bot will not move at all after a single run on single mode or during loiter? I'm not sure if everyone has MoveToFort in their task list and some peeps that don't might be wondering why their bot is standing still instead of loitering.

[casse-boubou]

loiter work with .gpx files. How to configure please?
Thanks

[janpascal]

@erdnaxela02 : gpx files are usually automatically generated, e.g. by a GPS device or tracking software on a mobile phone. If you like the loiter option, I think you should extract the waypoint from the gpx and put them in a json, and add the loiter values by hand.

[janpascal]

@alexyaoyang: I've added the documentation you asked for, could you please have another look?

[alexyaoyang]

Looks good to me! Merging this as feature does not affect current behavior.

[alexyaoyang]

@janpascal A quick test would be great next time! Good job on this feature tho! I can see myself using it! 👍