Extend dependencies exporter to support group

Why are we doing this work

Currently dependency list and exporter are only available on the project level.

Relevant links

Non-functional requirements

• Documentation:
• Feature flag:
• Performance:
• Testing:

Implementation plan

• backend A feature flag could be either created or shared with the one from this issue.
• backend Update model and table (i.e., dependency_list_exports) to have association with group.
• backend Update CreateExportService and ExportWorker to support group.
• backend DependencyEntity might have to be updated as project won't be available.
• backend Extend this API to support generation of exports on a group level.
• backend ::Sbom::DependenciesFinder will be used instead of ::Security::DependencyListService.

Note: The fact that ::Sbom::DependenciesFinder will be used instead of ::Security::DependencyListService means that both licenses and vulnerabilities data won't be available in the report. Those columns could be either be left there with empty values or removed for now.

Verification steps