new icon: fsharp (original) (#495)

* new icon: fsharp (original)
* new icon: fsharp (plain)

Author: maltejur

devicon.json

@@ -1139,6 +1139,23 @@
         "color": "#008cba",
         "aliases": []
     },
+    {
+        "name": "fsharp",
+        "tags": [
+            "language"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "plain"
+            ],
+            "font": [
+                "plain"
+            ]
+        },
+        "color": "#378BBA",
+        "aliases": []
+    },
     {
         "name": "gatling",
         "tags": [