add Map3d for 3d tiling

[SimonDanisch]

This refactors quite a lot of the package:

Tiling performance

• Factor out tile loading from Map into TileCache
• Rewrote tile queue and plot queue for clarity and performance
• Clean up stale tiles from download queue
• Streamline disk vs binary in memory downloaders for tile providers (via a configurable donwloader type)

Providers

• Refactor Tyler internals to allow different tile types and plot types
• Add PointCloud provider for GeoTiles (https://geotiles.citg.tudelft.nl)
• Add Elevation provider based on Esri data

Tile plotting

• Added an overloadable plotconfig which can be passed to Tyler.Map, to change how the tiles look (allows to completely change plot type, or just to add some attribute like alpha, or pre/post process data/plot.

Map3D

• Add Map3D to tyler, which calls Map with parameters to create a 3d map
• Fetch tiles for 3d camera frustrum with earth intersection
• optimize downloading and multi-thread it, reverse order of tile queue
• Optimize camera far / near for the large range of zooming for earth data
• Added a camera with some optimizations for navigating earth data

TODO

• clean up a few things
• if time, optimize 3d tile loading
• add documentations

[rafaqz]

Does mapping.csv need to be that big?

[SimonDanisch]

Does mapping.csv need to be that big?

Its really not optimal, but I haven't had time to find a better solution yet ;) I'm quite sure though if we put some time into it, there should be a better solution!

[asinghvi17]

Suggested change

	plot[3] = rotr90(data)
	# TODO: remove this once we can mutate image UVs in Makie
	plot[3] = rotr90(data)

[asinghvi17]

Suggested change

	p = Point2f[(0, 0), (1, 0), (1, 1), (0, 1)]
	GO.intersects(Polygon(p), Polygon(map(x -> x .- 1.1, p)))

(orphaned code)

[asinghvi17]

This looks super cool!

[lazarusA]

The point cloud example also doesn't work. It never shows anything.