Add `recruitment/list-candidates` profile `breezy-hr` map

[janhalama]

Description

This PR adds breezy-hr map for recruitment/list-candidates profile.

Known limitation of the map: Breezy HR provider does provide paginated endpoint for listing candidates, but the response do not contain previous and next page offsets or page links. Map implementation do allow the client to pass page limit and page cursor, but do not provide page cursors in the perform outcome.

The PR is based on #328.

Motivation and Context

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] I have read the CONTRIBUTING document.
• [ ] I haven't repeated the code. (DRY)
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.