feat: Add `CreateCandidate` use case with provider `breezy-hr`

[martinalbert]

Description

Implements map for provider breezy-hr.

blockers:

Unable to upload CV.

Motivation and Context

ATS integrations

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

[janhalama]

@martinalbert I fixed the conflict when creating candidate with email which already applied to the job and removed CV upload which is not supported at the moment by OneSDK. I also restructured the code into operations.

🙏 check my commit, I will review the rest of the PR later.

[martinalbert]

Looks great, thanks!