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/colord/parse.d.ts

@@ -0,0 +1,8 @@
+import { Parsers, ParseResult, Input, Format } from "./types";
+export declare const parsers: Parsers;
+/** Tries to convert an incoming value into RGBA color by going through all color model parsers */
+export declare const parse: (input: Input) => ParseResult | [null, undefined];
+/**
+ * Returns a color model name for the input passed to the function.
+ */
+export declare const getFormat: (input: Input) => Format | undefined;