new icon: gentoo (plain, plain-wordmark) (#1075)

* Add gentoo icons

* Update devicon.json

Co-authored-by: Thomas Bui <43018778+Thomas-Boi@users.noreply.github.com>

Author: jusuchin85

devicon.json

@@ -1754,6 +1754,26 @@
         "color": "#ffcfab",
         "aliases": []
     },
+    {
+        "name": "gentoo", 
+        "tags": [
+            "linux",
+            "distribuition",
+            "desktop"
+        ], 
+        "versions": {
+            "svg": [
+                "plain",
+                "plain-wordmark"
+            ],
+            "font": [
+                "plain-wordmark",
+                "plain"
+            ] 
+        },
+        "color": "#9991d9", 
+        "aliases": [] 
+    },
     {
         "name": "gimp",
         "tags": [