Adds Duffelbags. And Mime, Botany and Chemistry backpacks. (#1982)

* Sprite added

* Duffel prototypes

* Updates the surgery tools to ID standards

* Revert "Updates the surgery tools to ID standards"

This reverts commit a9997ea979230e090793f85c1e779c5d0a0f2217.

* Adds a filled surgical duffelbag

* Adds Mime, Botany and Chemistry backpack

Resources/Textures/Clothing/Back/Backpacks/mime.rsi/meta.json

@@ -0,0 +1,27 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Taken from tgstation at commit https://github.com/tgstation/tgstation/commit/547852588166c8e091b441e4e67169e156bb09c1",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "icon",
+            "directions": 1
+        },
+        {
+            "name": "equipped-BACKPACK",
+            "directions": 4
+        },
+        {
+            "name": "inhand-left",
+            "directions": 4
+        },
+        {
+            "name": "inhand-right",
+            "directions": 4
+        }
+    ]
+}