new icon: emacs (plain) (devicons#1096)

* Add emacs icon

* Fix typo: from plain to original

Author: jusuchin85

devicon.json

@@ -1471,6 +1471,22 @@
         "color": "#34495E",
         "aliases": []
     },
+    {
+        "name": "emacs",
+        "tags": [
+            "editor"
+        ],
+        "versions": {
+            "svg": [
+                "original"
+            ],
+            "font": [
+                "original"
+            ]
+        },
+        "color": "#421f5f",
+        "aliases": []
+    },
     {
       "name": "embeddedc",
       "tags": ["language", "programming"],