new icon: sourceengine (original, original-wordmark, plain, plain-wordmark) (#2211)

* new icon sourceengine

* Apply suggestions from code review

- Add missing SVG and font versions.
- add "javascript" tag
- add "source engine" altname

---------

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

Author: canaleal

devicon.json

@@ -11718,6 +11718,31 @@
             }
         ]
     },
+    {
+        "name": "sourceengine",
+        "altnames": [
+            "source engine"
+        ],
+        "tags": [
+            "game-engine",
+            "valve",
+            "javascript"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "plain",
+                "original-wordmark",
+                "plain-wordmark"
+            ],
+            "font": [
+                "plain",
+                "plain-wordmark"
+            ]
+        },
+        "color": "#f79a10",
+        "aliases": []
+    },
     {
         "name": "sourcetree",
         "altnames": [],