Add Galoshes slowdown over slippery surfaces (#30967)

* first draft

* Fixed it all, just need to rename stuff

* Rename and add comments

* Clean-up

* Access added

Resources/Prototypes/Entities/Clothing/Shoes/specific.yml

@@ -109,6 +109,11 @@
   - type: Clothing
     sprite: Clothing/Shoes/Specific/galoshes.rsi
   - type: NoSlip
+  - type: SlowedOverSlippery
+    slowdownModifier: 0.7
+  - type: SpeedModifierContactCapClothing
+    maxContactSprintSlowdown: 0.7
+    maxContactWalkSlowdown: 0.7
 
 - type: entity
   parent: [ClothingShoesBaseButcherable, BaseMajorContraband]