[Feature] Implement Scans API module

[talltechy]

Description

Create ScanAPI class for scan operations following v2.0 architecture patterns.

Features

• List scans with pagination
• Get scan details
• Start/stop scans
• Get scan status
• Get scan results
• Schedule scans
• Manage scan templates

Acceptance Criteria

• ScanAPI class created inheriting from BaseAPI
• All CRUD operations implemented
• Scan execution control (start, stop, pause, resume)
• Status monitoring capabilities
• Integration with InsightVMClient as client.scans
• Unit tests added
• Documentation updated

Technical Details

• Follow BaseAPI inheritance pattern
• Match patterns from AssetAPI and AssetGroupAPI
• Include comprehensive docstrings
• Type hints throughout

Context

Part of Sprint 5: Additional API Modules (1-2 days)

Expands API coverage for scan management operations.

See: memory-bank/github-workflow.md for workflow details