new icon: apachespark (original, original-wordmark, plain, plain-wordmark) (devicons#1261)

* Add Apache Spark icons. Closes devicons#583

* Add altnames in devicon.json

* Combine paths in plain versions

Author: luizcarloscf

devicon.json

@@ -365,6 +365,29 @@
             }
         ]
     },
+    {
+        "name": "apachespark",
+        "altnames": [],
+        "tags": [
+            "data-processing",
+            "data-science",
+            "machine-learning"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark",
+                "plain",
+                "plain-wordmark"
+            ],
+            "font": [
+                "plain",
+                "plain-wordmark"
+            ]
+        },
+        "color": "#e25a1c",
+        "aliases": []
+    },  
     {
         "name": "appcelerator",
         "altnames": [],