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[Help] - Add examples to repo #1

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@peterchappy

I'm trying to integrate this library with navmesh and I seem to be getting tripped up on something obvious. Would you be able to include the code for the example Squares at random positions as it's similar to what I'm trying to do.

In making a tower defense with mazing I'm taking the bounds of the towers, and passing them in as the obstacles.

    const obstacles = this.towers.map((t) => t.bounds);

    this.clearDebugPolygon();

    const navMeshPolygons = this.navMeshGenerator.buildNavMesh(
      obstacles,
      obstacleCellPadding,
    );
    
    this.navMesh = new NavMesh(navMeshPolygons);

    const foundMainPath = this.navMesh.findPath(
      { x: 0, y: 300 },
      {
        x: 700,
        y: 300,
      },
    );

So an example of obstacles

[
  {
    "x": 291,
    "y": 283
  },
  {
    "x": 331,
    "y": 283
  },
  {
    "x": 331,
    "y": 323
  },
  {
    "x": 291,
    "y": 323
  }
]

and the returned foundMainPath of

[{ x: 0, y: 300 }, { x: 700, y: 300 }]

Not asking for help debugging, more asking if you could include the linked examples in the repo for me to compare against.

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