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/https-proxy-agent/dist/index.js

@@ -0,0 +1,14 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+const agent_1 = __importDefault(require("./agent"));
+function createHttpsProxyAgent(opts) {
+    return new agent_1.default(opts);
+}
+(function (createHttpsProxyAgent) {
+    createHttpsProxyAgent.HttpsProxyAgent = agent_1.default;
+    createHttpsProxyAgent.prototype = agent_1.default.prototype;
+})(createHttpsProxyAgent || (createHttpsProxyAgent = {}));
+module.exports = createHttpsProxyAgent;
+//# sourceMappingURL=index.js.map