Review import/export projects and groups having group-level integrations

Description

We have to review import/export functionality for projects and groups having group-level integrations.

Currently, when importing a project, we create the integrations from the instance-level integration or the template integration. When importing a group, there isn't any functionality to create group-level integrations.

• Importing a project. We have to update the creation of the integrations to find the closest group to the project, then the instance-level integration, or finally from the template.
• Importing a group. We have to create the integrations from the closest parent group to the imported group or from the instance-level integration.