Add external-link icon

CHANGELOG.md

@@ -89,6 +89,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   - `comment-square`
   - `download`
   - `droplet`
+  - `external-link`
   - `file`
   - `flag`
   - `folder`

icons-manifest.json

@@ -89,6 +89,7 @@
   "layers",
   "anchor",
   "globe",
+  "external-link",
   "zap",
   "download",
   "upload",

icons/external-link.svg

@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#000" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+  <path d="M18,13v6a2,2,0,0,1-2,2H5a2,2,0,0,1-2-2V8A2,2,0,0,1,5,6h6"/>
+  <polyline points="15 3 21 3 21 9"/>
+  <line x1="10" y1="14" x2="21" y2="3"/>
+</svg>