refactor: simplify button styles across Svelte components

- Removed unnecessary 'btn-square' class from buttons in multiple components to streamline styling.
- Updated button elements in SolicitarFerias, editar, cadastro, and times pages for consistency and improved readability.
- Replaced SVG icons with Lucide icons for better visual consistency in the cadastro page.
- Cleaned up imports in the cadastro page to enhance code clarity.

apps/web/src/lib/components/SolicitarFerias.svelte

@@ -211,7 +211,7 @@
 								{#if periodos.length > 1}
 									<button
 										type="button"
-										class="btn btn-xs btn-error btn-square"
+										class="btn btn-xs btn-error"
 										aria-label="Remover período"
 										onclick={() => removerPeriodo(periodo.id)}
 									>