Added the instructor mantle. Can only spawned in through the entity m…

…enu.

File Changes:

+ C:\CodeProjects\space-station-14\Resources\Textures\Harmony\Clothing\Neck\Misc\instructormantle.rsi
    + .\equipped-NECK.png
    + .\icon.png
    + .\meta.json
+ C:\CodeProjects\space-station-14\Resources\Prototypes\Harmony\Entities\Clothing\Neck\mantles.yml

Reasoning:

There is no real reason other than that it would be fun for the teach and learn day.

Resources/Prototypes/Harmony/Entities/Clothing/Neck/mantles.yml

@@ -0,0 +1,10 @@
+- type: entity
+  parent: ClothingNeckBase
+  id: ClothingNeckMantleInstructor
+  name: instructor mantle
+  description: For instructors so their students can identify them easily and so they can just feel special.
+  components:
+  - type: Sprite
+    sprite: Harmony\Clothing\Neck\Misc\instructormantle.rsi
+  - type: Clothing
+    sprite: Harmony\Clothing\Neck\Misc\instructormantle.rsi

Resources/Textures/Harmony/Clothing/Neck/Misc/instructormantle.rsi/meta.json

@@ -0,0 +1,18 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "drawn by Tsawodi",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "icon"
+    },
+    {
+      "name": "equipped-NECK",
+      "directions": 4
+    }
+  ]
+}