Updated extension: distance evaluation for Linked Object Tools

[D8H]

Describe the extension

This is an update to: https://github.com/4ian/GDevelop-extensions/issues/122 and https://github.com/4ian/GDevelop-extensions/issues/140 It add

• an action get the distance of the instance that has been traveled
• actions to link neighbors on rectangular grids, isometric grids and hexagonal grids.

http://wiki.compilgames.net/doku.php/gdevelop5/all-features/extensions/linked-objects-tools

An example that shows how to evaluate distance by roads to define rules for city builders uses it (https://github.com/4ian/GDevelop/issues/2638)

Checklist

• [x] Extension has a proper name and description.
• [x] Extension has tags (for example: "platform, brick, breakable").
• [x] All behaviors have a description.
• [x] All functions (actions, conditions, expressions) have descriptions.
• [x] I confirm that this extension can be integrated to this GitHub repository, distributed and MIT licensed.

Extension file

https://www.dropbox.com/s/dyjlfzc2ok6f6dd/LinkTools.zip?dl=1

Idea box

I think it could be useful for point and click to bypass obstacles with a predetermined polygonal chain, so I might do another example for this one day.

[4ian]

Closing as added through a PR