ci: Setup CodeRabbit config and PR test workflow

[DecodeX15]

Addressed Issues:

Fixes #(issue number)

Screenshots/Recordings:

Additional Notes:

Additional Notes:

• Added a custom .coderabbit.yaml configuration to enforce Flutter/Dart specific rules and ignore generated files for coderabbit PR reviews.
• Added a new GitHub Actions CI workflow (test.yml) that automatically builds the SQLite database and runs flutter test on every pull request to ensure code quality.

Checklist

• My code follows the project's code style and conventions
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have joined the Discord server and I will share a link to this PR with the project maintainers there
• I have read the Contributing Guidelines

⚠️ AI Notice - Important!

We encourage contributors to use AI tools responsibly when creating Pull Requests. While AI can be a valuable aid, it is essential to ensure that your contributions meet the task requirements, build successfully, include relevant tests, and pass all linters. Submissions that do not meet these standards may be closed without warning to maintain the quality and integrity of the project. Please take the time to understand the changes you are proposing and their impact.

[coderabbitai]

Important

• 🔍 Trigger review

This repository does not receive automatic reviews because it has fewer than 10 stars.

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 4fbad8e0-db3f-4115-ba3c-78a69e5f64a0

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