console: What does the usage page show?

### Component

Console

### What is the current behaviour?

The usage page shows number of requests and number of models.

Upon expanding the entry, it shows this:

It's not clear to me what each of those numbers mean. The column name is shown as number of requests. How is the total number of requests so high (69.36k) but the number per model is no more than 9 and there are only 5 models here?

### How to reproduce the issue?

Check the usage page of the sample Hasura project (e-commerce app).

Start at the Console usage page in the sample Hasura project and inspect the aggregate and expanded per-model values shown in the issue. Determine what each number and column represents, and document the relationship between the total request count and the per-model figures so the page's usage data is understandable.

Written by the indexing model from the issue text.