Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/svgo/plugins/removeDesc.js

@@ -0,0 +1,32 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = true;
+
+exports.params = {
+    removeAny: true
+};
+
+exports.description = 'removes <desc>';
+
+var standardDescs = /^(Created with|Created using)/;
+
+/**
+ * Removes <desc>.
+ * Removes only standard editors content or empty elements 'cause it can be used for accessibility.
+ * Enable parameter 'removeAny' to remove any description.
+ *
+ * https://developer.mozilla.org/en-US/docs/Web/SVG/Element/desc
+ *
+ * @param {Object} item current iteration item
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author Daniel Wabyick
+ */
+exports.fn = function(item, params) {
+
+    return !item.isElem('desc') || !(params.removeAny || item.isEmpty() ||
+            standardDescs.test(item.content[0].text));
+
+};