Create seed data for Ci::DailyBuildGroupReportResult

Problem

In order to understand how our ~"group::pipeline insights" features such as code coverage history works it can be quite difficult to get the data locally.

To improve developer experience and speed up the maintainable work for this feature we should create some seed data that developers can ran with a rake task to backfill our Ci::DailyBuildGroupReportResult which is the model being used for this feature.

Solution

1. Create a new class Gitlab::Seeder::DailyBuildGroupReportResultSeeder in db/fixtures/development
2. Populate relevant data to be used for our feature, take inspiration from our fixture