Custom status report names

[godrei]

Checklist

• I've read and followed the Contribution Guidelines
• README.md is updated with the changes (if needed)

Version

Requires a MINOR version update

Context

This PR introduces support for configuring custom build status report names in the bitrise.yml configuration file.

By default, Bitrise uses the ci/bitrise/<project_slug>/<event_type> status report name (or simply Bitrise for legacy GitHub Checks enabled projects).

The default value can be overwritten at App level and Workflow and Pipeline level too:

---
format_version: '13'
app:
  status_report_name: "ci/bitrise/<project_slug>/<target_id>/<event_type>"

pipelines:
  pipeline:
    status_report_name: "Custom status name for a pipeline"

workflows:
  primary:
    status_report_name: "Custom status name for a workflow"

The custom status name must be a maximum of 100 chars long and must match the ^[a-zA-Z0-9,./():\-_ <>[\]|]*$ regex.