feat(export/import): add format support for SparkJobDefinition and SemanticModel

[Copilot]

📥 Pull Request

✨ Description of new changes

Summary

Extends export/import format support beyond Notebook to include SparkJobDefinition (V1/V2) and SemanticModel (TMDL/TMSL), based on fabric-rest-api-specs analysis.

Implementation

Format mappings added:

• SparkJobDefinition: SparkJobDefinitionV1 (default), SparkJobDefinitionV2
• SemanticModel: TMDL (default), TMSL
• Notebook: Added explicit format names (ipynb, fabricGitSource) alongside existing .py/.ipynb

Core changes:

• fab_types.py: Extended definition_format_mapping with new formats
• fab_fs_import_item.py: Replaced hardcoded .py/.ipynb validation with dynamic mapping lookup
• fab_fs_export_item.py: Dynamic format validation against item type mappings
• fab_item.py: Updated get_payload() to handle format parameter dynamically; simplified Notebook format logic
• common.py: Added invalid_format() for consistent error messaging across export/import
• fab_fs_parser.py: Enhanced help text with format examples

Usage:

# Export with format
fab export ws/sjd.SparkJobDefinition -o /tmp --format SparkJobDefinitionV2
fab export ws/sm.SemanticModel -o /tmp --format TMSL

# Import with format
fab import sjd.SparkJobDefinition -i /tmp/sjd --format SparkJobDefinitionV2 -f

Testing:

• Added 9 unit tests for format mapping and validation
• All 211 existing tests pass
• CodeQL: 0 vulnerabilities

Format parameter is optional (defaults used) maintaining backward compatibility.

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