Add a BRB Sign (#8437)

Resources/Prototypes/Entities/Objects/Misc/brb_sign.yml

@@ -0,0 +1,9 @@
+- type: entity
+  parent: BaseItem
+  id: BrbSign
+  name: brb sign
+  description: Lets others know you are away.
+  components:
+  - type: Sprite
+    sprite: Objects/Misc/brbsign.rsi
+    state: icon

Resources/Textures/Objects/Misc/brbsign.rsi/meta.json

@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "license": "CC0-1.0", "copyright": "Made by efzapa, use or modify it how you please lol.", "states": [{"name": "icon"}]}