Refactor UI components for layout management and results display

- Replaced the `renderizar` function in `layouts.rs` with a new `view` function using Iced for a more modern UI approach.
- Introduced a new `view_secao_layouts` function to handle the display of saved layouts.
- Updated the `resultado.rs` file to use Iced for rendering the results screen, including buttons for actions and pagination controls.
- Created a new `selecionar_aba.rs` file for the selection of XLSX sheet tabs, implementing a preview feature.
- Removed old rendering functions and replaced them with Iced components for better performance and maintainability.
- Added design tokens in `design_tokens.json` for consistent styling across the application.
- Created a mockup HTML file to visualize the UI design.

Cargo.toml

@@ -4,8 +4,8 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-eframe = "0.31"
-egui = "0.31"
+iced = { version = "0.13", features = ["tokio", "image"] }
+tokio = { version = "1", features = ["full"] }
 rusqlite = { version = "0.32", features = ["bundled"] }
 csv = "1.3"
 calamine = "0.26"
@@ -20,7 +20,6 @@ dirs = "5"
 thiserror = "2"
 regex = "1"
 rfd = "0.15"
-image = { version = "0.25", default-features = false, features = ["ico"] }
 
 [build-dependencies]
 winres = "0.1"