Integrate new map shader for map and minimap

[davidejensen]

Based on what has been created in issue #2353 integrate the shader for the map and minimap.

Tasklist:

• [x] Integrate shader for map
• [x] Integrate shader for minimap
• [x] Adapt zoom and move behavior in the map at a shader level
• [x] Adapt the centering functionality to a shader level
• [x] Adapt the overlay system to the shader map

[JorgeDecentraland]

blocked until @olavra and @JuanSalice coordinate in order to validate the current implementation

[olavra]

• [ ] More subtle 1x1 divisions
• [ ] Wrong data for districts or plazas (like Dragon City)
• [ ] Some black spots in the corners
• [ ] Grid + borders should behave properly depending on the zoom (mipmap?)
• [ ] rainbow in the border should work with masked UI
• [ ] Border inside districts and plazas should be of a brighter tone of the parcel base color

[aixaCode]

Endpoints for fetching the required textures:

• https://api.decentraland.org/v1/estatemap.png
• https://api.decentraland.org/v1/minimap.png

[xavi-dcl]

@AjimenezDCL what needs to happen to get this one unblock?

[m3taphysics]

Closing in favour of #4950