refactor: svg icons (#1096)

* refactor svg

* add svgo

* refine

* add tree.svg

* add svg.yml

src/icons/svg/user.svg

@@ -1 +1 @@
-<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg t="1503993891882" class="icon" style="" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="7986" xmlns:xlink="http://www.w3.org/1999/xlink" width="64" height="64"><defs><style type="text/css"></style></defs><path d="M504.951 511.98c93.49 0 169.28-74.002 169.28-165.26 0-91.276-75.79-165.248-169.28-165.248-93.486 0-169.287 73.972-169.279 165.248-0.001 91.258 75.793 165.26 169.28 165.26z m77.6 55.098H441.466c-120.767 0-218.678 95.564-218.678 213.45V794.3c0 48.183 97.911 48.229 218.678 48.229H582.55c120.754 0 218.66-1.78 218.66-48.229v-13.77c0-117.887-97.898-213.45-218.66-213.45z" p-id="7987"></path></svg>
+<svg width="130" height="130" xmlns="http://www.w3.org/2000/svg"><path d="M63.444 64.996c20.633 0 37.359-14.308 37.359-31.953 0-17.649-16.726-31.952-37.359-31.952-20.631 0-37.36 14.303-37.358 31.952 0 17.645 16.727 31.953 37.359 31.953zM80.57 75.65H49.434c-26.652 0-48.26 18.477-48.26 41.27v2.664c0 9.316 21.608 9.325 48.26 9.325H80.57c26.649 0 48.256-.344 48.256-9.325v-2.663c0-22.794-21.605-41.271-48.256-41.271z" stroke="#979797"/></svg>