MAJOR rendering overhaul. Snow deformation, persistent light, flowmap out. Also ECS architexture overhaul

build.rs

@@ -1,7 +1,6 @@
 fn main()
 {
     let wesl = wesl::Wesl::new("src/shaders");
-    wesl.build_artifact(&"package::standard".parse().unwrap(), "standard");
+    wesl.build_artifact(&"package::main".parse().unwrap(), "main");
     wesl.build_artifact(&"package::shadow".parse().unwrap(), "shadow");
-    wesl.build_artifact(&"package::terrain".parse().unwrap(), "terrain");
 }