new icon: fortran (original) (devicons#1098)

* Add Fortran icon

* Fix black blob

Author: jusuchin85

devicon.json

@@ -1863,6 +1863,23 @@
         "color": "#3FB6D3",
         "aliases": []
     },
+    {
+        "name": "fortran",
+        "tags": [
+            "programming",
+            "language"
+        ],
+        "versions": {
+            "svg": [
+                "original"
+            ],
+            "font": [
+                "original"
+            ]
+        },
+        "color": "#734f96",
+        "aliases": []
+    },
     {
         "name": "foundation",
         "tags": [