feat: initialize project

README.md

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+# Nordify (Rust)
+
+A Rust reimplementation of
+[nordify](https://github.com/kikefdezl/nordify), a tool that converts
+images to the [Nord](https://www.nordtheme.com/) palette without
+dithering artifacts.
+
+> [!NOTE]
+> This project is in its infancy and probably not correct yet.
+
+## Why a Rust rewrite?
+
+The original `nordify` is written in Python. The original project aims
+to provide the same image conversion, without the artifacts typical of
+naive dithering algorithms, as a fast, dependency-light single Rust
+binary.
+
+## Usage
+
+```bash
+cargo run --release -- input.png -o output.png
+```
+
+## Development
+
+```bash
+cargo build
+cargo test
+```
+
+## License
+
+GPL-3.0-or-later