new icon: oauth (original, plain) (#1759)

* new icon: oauth (original, plain)

* Change tag from auth to authentication

* chore: apply suggestions from code review

Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

* Remove icons padding.

---------

Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>
Co-authored-by: David Leal <halfpacho@gmail.com>
Co-authored-by: Josélio Júnior <76992016+lunatic-fox@users.noreply.github.com>

devicon.json

@@ -6297,6 +6297,34 @@
         "color": "#00c48d",
         "aliases": []
     },
+    {
+        "name": "oauth",
+        "altnames": [],
+        "tags": [
+            "authentication",
+            "security"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "plain"
+            ],
+            "font": [
+                "plain"
+            ]
+        },
+        "color": "#000000",
+        "aliases": [
+            {
+                "base": "original",
+                "alias": "original-wordmark"
+            },
+            {
+                "base": "plain",
+                "alias": "plain-wordmark"
+            }
+        ]
+    },
     {
         "name": "objectivec",
         "altnames": [],