feat: initial implementation of a browser application using egui and wgpu

- Added Cargo.toml with dependencies for egui, wgpu, and other libraries.
- Implemented main application logic in src/app.rs, including window management, rendering, and tab handling.
- Created a new module src/servo_host.rs to manage interactions with the Servo engine and webview.
- Established event handling for user inputs, including keyboard and mouse events.
- Integrated a basic UI layout with a tab strip, toolbar, and status bar.
- Implemented functionality for navigating URLs and managing multiple tabs.

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "browser"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+egui = "0.36.1"
+egui-wgpu = "0.36.1"
+egui-winit = "0.36.1"
+env_logger = "0.11.11"
+euclid = "0.22"
+image = "0.25"
+keyboard-types = "0.8"
+log = "0.4.33"
+pollster = "0.4"
+rustls = "0.23"
+servo = "0.5.0"
+url = "2"
+wgpu = "30.0.0"
+winit = "0.30.13"