fix(io): modify svgo config.

icons/io/.gitignore

@@ -6,4 +6,5 @@
 !tsconfig.json
 !package.json
 !data
-!README.md
+!README.md
+!svgo.config.js

icons/io/svgo.config.js

@@ -0,0 +1,21 @@
+
+/** @type {import('svgo').Config} */
+module.exports = {
+  multipass: true,
+  js2svg: {
+    indent: 2, // string with spaces or number of spaces. 4 by default
+    pretty: true, // boolean, false by default
+  },
+  plugins: [
+    'removeComments',
+    'removeDimensions',
+    'cleanupAttrs',
+    {
+      name: 'removeAttrs',
+      fn: (ast, params, info) => {
+        delete ast.children[0]?.attributes['style'];
+        delete ast.children[0]?.attributes['xml:space'];
+      },
+    }
+  ]
+}