GHGP, Enhanced Workflow to Support GHGP Reasonable Level Assurance

### Problem description
Contemporary GHG data quality and inventory processes make it difficult to achieve reasonable levels of assurance. However, incoming regulations as well as evolving best practices will make reasonable level assurance more of an imperative in the near future. Digitized methodologies and DLT supported GHG inventories will enhance the feasibility and reduce the burden of reasonable level assurance through increased data quality and granularity combined with transparent and traceable provenance of data from activity data to reporting metrics.

### Requirements
- Complex workflows for assurance processes to support reasonable-level assurance at scale
- Assurance provider onboarding
- Assigning assurance provider
- Corrective actions and clarification requests
- Digital assurance reports and schemas
- Reference ETS auditor guidelines from emission trading schemas (ETS)
- Enhanced UX for assurance providers
- Structured and easily navigable
- Downloadable reports

### Definition of done
Enhanced workflows, UX, and functionality exists facilitate reasonable level assurance for digital GHG inventories

### Acceptance criteria
Functionality approved by GHG community members and other key stakeholders.