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/webpack-manifest-plugin/dist/helpers.d.ts

@@ -0,0 +1,26 @@
+import webpack, { AssetInfo, Chunk } from 'webpack';
+import { InternalOptions, Manifest } from './';
+export interface FileDescriptor {
+    chunk?: ProperChunk;
+    isAsset: Boolean;
+    isChunk: Boolean;
+    isInitial: Boolean;
+    isModuleAsset: Boolean;
+    name: string;
+    path: string;
+}
+export interface CompilationAssetInfo extends AssetInfo {
+    sourceFilename: string;
+}
+export interface CompilationAsset extends webpack.compilation.Asset {
+    chunks: any[];
+    info: CompilationAssetInfo;
+}
+export interface ProperChunk extends Chunk {
+    auxiliaryFiles: any[];
+}
+declare const generateManifest: (compilation: webpack.compilation.Compilation, files: FileDescriptor[], { generate, seed }: InternalOptions) => Manifest;
+declare const reduceAssets: (files: FileDescriptor[], asset: CompilationAsset, moduleAssets: Record<any, any>) => FileDescriptor[];
+declare const reduceChunk: (files: FileDescriptor[], chunk: ProperChunk, options: InternalOptions, auxiliaryFiles: Record<any, any>) => FileDescriptor[];
+declare const transformFiles: (files: FileDescriptor[], options: InternalOptions) => FileDescriptor[];
+export { generateManifest, reduceAssets, reduceChunk, transformFiles };