- Implement ESLint with @antfu/eslint-config and apply consistent formatting across the codebase.

- Refactor `useTasks` to improve task fetching, creation, and updating logic.
- Enhance `TodoItem` and `ListScreen` with improved bindings, sorting, and category handling.
- Update dependencies and adjust task grouping in various components.

eslint.config.js

@@ -0,0 +1,6 @@
+import antfu from '@antfu/eslint-config'
+
+export default antfu({
+  formatters: true,
+  vue: true,
+})