Change the algorithm of land claiming

[Jakubok-dev]

Current algorithm

Currently it registers the UUID of a claimer for every block in the game, which causes performance issues.

New algorithm

The new algorithm should create a polygon based on the border signs' locations and then tell, whether a position is inside the polygon or outside of it.

Requirements

In order to close the issue, following features must be rebuilt:

• [x] rebuild the mechanic of border signs
• [x] rebuild chunk claim registry,
• [x] rebuild the border rendering in the world,
• [ ] rebuild the border drawing on the map,
• [ ] rebuild the territory rendering on the map.