fix(is): add svgo config.

icons/is/svgo.config.js

@@ -0,0 +1,41 @@
+const REG = /(enable-background:accumulate;?|-inkscape-font-specification:Open Sans;?|block-progression:tb;?|-inkscape-font-specification:Sans;?|-inkscape-font-specification:'Open Sans Bold';?|writing-mode:lr-tb;?|enable-background:new;?|color-interpolation-filters:linearRGB;?|solid-opacity:1;?|color-interpolation-filters:sRGB|color-interpolation-filters:linearRGB;?|solid-color:#000;?)/g
+
+function modify(children = []) {
+  return children.map((item) => {
+    const str = item.attributes?.['style'];
+    if (str && REG.test(str)) {
+      item.attributes['style'] = str.replace(REG, '');
+    }
+    if (item.children) {
+      item.children = modify(item.children);
+    }
+    return item;
+  });
+}
+
+/** @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'];
+        ast.children[0]?.children.forEach((item) => {
+          if (item.name === 'a') {
+            ast.children[0].children = [...item.children];
+          }
+        });
+        ast.children = modify(ast.children)
+      },
+    }
+  ]
+}