Devfile API typescript types does not have a type for devfile

[sleshchenko]

Describe the bug
Devfile API typescript types does not have a type for devfile.

To Reproduce
Steps to reproduce the behavior:

1. Import devfile/api somewhere in typescript project.
2. Check for available types, there are v1alpha2DevWorkspace, v1alpha2DevWorkspaceTemplate, but no type for Devfile with metadata and schemaVersion.

Expected behavior
Devfile API exposes type for Devfile https://github.com/devfile/api/blob/main/pkg/apis/workspaces/v1alpha2/devfile.go

[sleshchenko]

should be fixed by #551