Initial project scaffold: Rust egui ePub reader

- Cargo.toml with eframe, egui, epub, rfd, serde dependencies
- Source modules: app, book, font, persistence, reader, theme
- MinGW static linking config
- .gitignore for build artifacts

Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "epub-read"
+version = "0.1.0"
+edition = "2021"
+description = "ePub reader with egui"
+
+[[bin]]
+name = "epub-read"
+path = "src/main.rs"
+
+[dependencies]
+eframe = "0.31"
+egui = "0.31"
+epub = "1.2"
+rfd = "0.15"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+
+[profile.release]
+opt-level = "z"
+lto = true
+codegen-units = 1
+strip = "symbols"