Add line version

Author: weh

devicon.json

@@ -3160,11 +3160,17 @@
         "versions": {
             "svg": [
                 "original",
-                "original-wordmark"
+                "original-wordmark",
+                "plain",
+                "plain-wordmark",
+                "line",
+                "line-wordmark"
             ],
             "font": [
                 "plain",
-                "plain-wordmark"
+                "plain-wordmark",
+                "line",
+                "line-wordmark"
             ]
         },
         "color": "#0366d6",