Logistics + Mailroom Directional sign (#118)

* logi

* mailroom sign

I think Hyenh made those

Resources/Prototypes/DeltaV/Entities/Structures/Wallmounts/Signs/signs.yml

@@ -0,0 +1,19 @@
+- type: entity
+  parent: BaseSignDirectional
+  id: SignDirectionalLogistics
+  name: logistics sign
+  description:  A direction sign, pointing out which way the Logistics department is.
+  components:
+  - type: Sprite
+    sprite: DeltaV/Structures/Wallmounts/signs.rsi
+    state: direction_logi
+
+- type: entity
+  parent: BaseSignDirectional
+  id: SignDirectionalMail
+  name: mailroom sign
+  description:  A direction sign, pointing out which way the mailroom is.
+  components:
+  - type: Sprite
+    sprite: DeltaV/Structures/Wallmounts/signs.rsi
+    state: direction_mail

Resources/Textures/DeltaV/Structures/Wallmounts/signs.rsi/meta.json

@@ -0,0 +1,19 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "directional sprites taken from https://github.com/space-wizards/space-station-14/commit/c1556214de46d66fe4057500e269b17438dc96ca | direction_mail modified by Hyenh, direction_logi modified by Floofers",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "direction_logi",
+            "directions": 4
+        },
+        {
+            "name": "direction_mail",
+            "directions": 4
+        }
+    ]
+}