Adds material and singularity cargo crates (#3445)

* Adds various crates

* Removes redundant code from EmitterComponent.cs

* (fixed) emitter

* Hopefully good

* Update meta.json

Resources/Maps/saltern.yml

@@ -38423,7 +38423,7 @@ entities:
     rot: 4.371139006309477E-08 rad
     type: Transform
 - uid: 4290
-  type: SinguloGenerator
+  type: SingularityGenerator
   components:
   - parent: 853
     pos: 49.5,-24.5
@@ -41471,7 +41471,7 @@ entities:
     rot: 4.371139006309477E-08 rad
     type: Transform
 - uid: 4714
-  type: CrateMaterialsMetal
+  type: CrateMaterialMetal
   components:
   - parent: 853
     pos: 21.5,13.5