refactor: svg icons (#1096)

* refactor svg

* add svgo

* refine

* add tree.svg

* add svg.yml

src/icons/svgo.yml

@@ -0,0 +1,22 @@
+# replace default config
+
+# multipass: true
+# full: true
+
+plugins:
+
+  # - name
+  #
+  # or:
+  # - name: false
+  # - name: true
+  #
+  # or:
+  # - name:
+  #     param1: 1
+  #     param2: 2
+
+- removeAttrs:
+    attrs:
+      - 'fill'
+      - 'fill-rule'