Add hardlight spear implant (#587)

* Add hardlight spear implant

* Small fixes

* Fix collision layer

Resources/Textures/White/Objects/Weapons/hardlight_spear.rsi/meta.json

@@ -0,0 +1,34 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from monkestation at https://github.com/Monkestation/MonkeStation/commit/c995c9bda2c23386614ac1cb00aca552f573ba9f, equipped and wielded sprites by Aviu",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "spear"
+    },
+    {
+      "name": "inhand-left",
+      "directions": 4
+    },
+    {
+      "name": "inhand-right",
+      "directions": 4
+    },
+    {
+        "name": "wielded-inhand-left",
+        "directions": 4
+    },
+    {
+        "name": "wielded-inhand-right",
+        "directions": 4
+    },
+    {
+      "name": "equipped-BACKPACK",
+      "directions": 4
+    }
+  ]
+}