Implement rest api into the todo app

[JvnSlv]

Overview

Closes: < issue >

< Pull Request Description >

Checklist

Implementation

• [ ] Implementation matches ticket acceptance criteria and technical notes
• [ ] Manually tested against Acceptance Criteria
• [ ] UI checked in Light / Dark mode

Stability

• [ ] Checked if changes affect any features and verified affected features work as expected
• [ ] Added unit tests for new code and verified existing tests work as expected

Code quality

• [ ] Updated CHANGELOG.md, README.md and package versions in pubspec.yaml
• [ ] Dependencies are updated to latest versions or new tickets are created if there are breaking changes or deprecations
• [ ] If an unrelated part of the codebase needs to be updated or refactored, create tickets with proposed changes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Please upload report for BASE (epic/todo-app-offline-mode@e540d4e). Learn more about missing BASE report.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## epic/todo-app-offline-mode #753 +/- ## ============================================================= Coverage ? 85.69% ============================================================= Files ? 52 Lines ? 1321 Branches ? 0 ============================================================= Hits ? 1132 Misses ? 189 Partials ? 0 ```

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