Add error display in `Clean cache` view

[pashkov256]

Key points:

1. Add error field to CacheModel struct as in views/rules
2. Display error message after scanning
3. Clear error on new scan
4. Use existing errors package
5. Follow the same pattern as in rules view

Implementation steps:

1. Add error field to CacheModel:

type CacheModel struct {
    // ... existing fields ...
    Error *errors.Error
}

2. Update error handling in scan function:

if err := cache.ClearCache(); err != nil {
    model.Error = errors.New(errors.ErrorTypeValidation, err.Error("Not all files were successfully deleted"))
}

3. Add error display in View():

if model.Error != nil && m.Error.IsVisible() {
    return styles.ErrorStyle.Render(model.Error.Message)
}

4. Clear error on new scan:

model.Error

[manideep1821]

Hi, I'd love to tackle this as a first-time contributor!

[pashkov256]

Hi! @manideep1821 ! I've assigned the issue to you.

[manideep1821]

#263