Add extra columns to runner usage CSV

What does this MR do and why?

This MR adds the runner_type and status columns to the runner usage CSV, while also cleaning up the querying logic to make it easier to read.

EE: true

MR acceptance checklist

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Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Start the clickhouse server ./clickhouse server

2. Run migrations bundle exec rake gitlab:clickhouse:migrate

3. In the rails console, generate a CSV dump for the top 10 projects and all runner types in an appropriate time window:

   puts Ci::Runners::GenerateUsageCsvService.new(current_user: User.find(1), runner_type: nil, from_date: Date.new(2023, 11, 1), to_date: Date.new(2023, 11, 30), max_project_count: 10).execute.payload[:csv_data]

   Confirm that the new columns are present.

4. Run the command again, but now for the top 2 projects:

   puts Ci::Runners::GenerateUsageCsvService.new(current_user: User.find(1), runner_type: nil, from_date: Date.new(2023, 11, 1), to_date: Date.new(2023, 11, 30), max_project_count: 2).execute.payload[:csv_data]

   Confirm that the rollup values in Other projects make sense.