Reminder objectbox

[JvnSlv]

Overview

Closes: #674

Checklist

Implementation

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

Stability

• [x] 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
• [x] 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-commenter]

Codecov Report

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

Project coverage is 95.30%. Comparing base (6a67490) to head (c1e56bb). Report is 11 commits behind head on develop.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #685 +/- ## =========================================== + Coverage 95.12% 95.30% +0.17% =========================================== Files 16 40 +24 Lines 349 895 +546 =========================================== + Hits 332 853 +521 - Misses 17 42 +25 ```

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