Procgen biomes (#13487)

* Planetmap tiles

Biomes etc etc

* a

* oop

* Chunk-based rendering

* funny

* Less allocations

* Fix overdraw

* Content tile edge support

Also updated grass to use it as a POC.

* Kindly revert

* Update for variant edges

* fixes

* Use fastnoise

* Remove redundant group

* a

* refactor a fair bit

* Prototype data instead

* tweaks

* a

* fix maths

* working

* a

* Slightly better empty support

* a

* flowers

* sounds

* lewd

* Networking

* more fixes

* better

* colours

* Some chunk loading

* Proper loading and unloading

* Better loading

* Fix parallax and movement sounds

* Anchoring support + decal setup

* Most of the way to load and unload

* Decal loading kinda werkin

* large trees

* started diffing

* a

* Variant support and deserts

* a

* snow

* agony, even

* working again

* todo

* a

* laba tiles

* aeiou

* a

# Conflicts:
#	Resources/Prototypes/Entities/Tiles/planet.yml
#	Resources/Prototypes/Tiles/planet.yml
#	Resources/Textures/Tiles/Planet/Lava/lava.rsi/meta.json

* laba

* Add lava

* Initial ignition

* triggers

* a

* a

* y

* Add basalt tiles

Did some unconventional things for the animation + rocks.

* fixies

* mergies

* promotion

* lava biome

* Lava planet start

* cleanup and more lava

* laba

* maccas

* biome stuf

* weh

* bongflicts

* aeaeae

* More fixes

* a

* these too

Content.Shared/Maps/ContentTileDefinition.cs

@@ -31,6 +31,10 @@ namespace Content.Shared.Maps
         public string Name { get; private set; } = "";
         [DataField("sprite")] public ResourcePath? Sprite { get; }
 
+        [DataField("cornerSprites")] public List<ResourcePath> CornerSprites { get; } = new();
+
+        [DataField("cardinalSprites")] public List<ResourcePath> CardinalSprites { get; } = new();
+
         [DataField("isSubfloor")] public bool IsSubFloor { get; private set; }
 
         [DataField("baseTurfs")] public List<string> BaseTurfs { get; } = new();