Use the `product_feedback_array` table to answer the following business questions about product reviews.

1. **Unnest the `ratings` array** to count how many times each rating appears **across all products**:
   * Unnest the `ratings` array;
   * Count the occurrences of each rating (e.g., 5, 4, 3, etc.);
   * Your query should return these columns:
     * `rating` (`INTEGER`);
     * `rating_count` (how many times this rating appears).
2. Calculate the **average, total, and maximum rating** for each `product_name`:
   * Calculate the average rating;
   * Count the total number of ratings;
   * Find the highest rating given;
   * Your query should return these columns:
     * `product_name`;
     * `average_rating`;
     * `total_ratings`;
     * `max_rating`.
3. **Identify which products** have the tag `"durable"` in their `tags` array:
   * Filter the results to include only products with the `"durable"` tag;
   * Your query should return these columns:
     * `product_name` (only those that include `"durable"` in `tags`).

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Challenge: Product Ratings