Add zap icon

CHANGELOG.md

@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   - `thumbs-down`
   - `thumbs-up`
   - `video-off`
+  - `zap`
 
 ### Changed
 - Redesign project website

icons-manifest.json

@@ -39,6 +39,7 @@
   "cloud-off",
   "anchor",
   "globe",
+  "zap",
   "square",
   "circle",
   "circle-plus",

icons/zap.svg

+<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">
+  <polygon points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/>
+</svg>
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