[Domain] Build `CategoryStatsUseCase`

[ILIYANGERMANOV]

Please confirm the following

• [X] I checked the current issues for duplicate issues.

What would you like to improve?

• Follow the same pattern as AccountStatsUseCase

Data model:

data class CategoryStats(
    val income: StatSummary,
    val expense: StatSummary,
) {
    companion object {
        val Zero = AccountStats(
            income = StatSummary.Zero,
            expense = StatSummary.Zero,
        )
    }
}

Because...

• Having a proper domain layer is important

Description

No response

Success Criteria

• Unit tests
• Property-based tests
• Follows all Ivy developer guidelines (expect Requests for changes on the PR - this is a critical piece of code for the project)

[ivywallet]

Thank you @ILIYANGERMANOV for raising Issue #3144! 🚀 What's next? Read our Contribution Guidelines 📚.

Tagging @ILIYANGERMANOV for review & approval 👀

[isaacnguyen0809]

I'm on it

[ivywallet]

Thank you for your interest @isaacnguyen0809! 🎉 Issue #3144 is assigned to you. You can work on it! ✅

If you don't want to work on it now, please un-assign yourself so other contributors can take it.

Also, make sure to read our Contribution Guidelines.