Support `tsci export --format bom-csv` for Bill of Materials export

[buildingvibes]

Description

Add support for exporting Bill of Materials (BOM) in CSV format via the command line.

This feature was originally requested in the archived v0.0.x-cli repository (issue #183) and should be implemented in the new CLI.

Proposed Usage

tsci export path/to/example.tsx --format bom-csv

Or with output path:

tsci export path/to/example.tsx --format bom-csv --output path/to/bom.csv

Implementation Notes

• The circuit-json-to-bom-csv package already exists and provides the necessary conversion functions
• This should follow the same pattern as other export formats (schematic-svg, pcb-svg, etc.)
• Add "bom-csv" to the ALLOWED_EXPORT_FORMATS array
• Add ".bom.csv" to the OUTPUT_EXTENSIONS mapping
• Use convertCircuitJsonToBomRows and convertBomRowsToCsv from the package

Benefits

This would allow users to generate a bill of materials from their circuit files via CLI, which is useful for:

• Automated build processes
• Cost estimation
• Component procurement
• Integration with other tools

Related

This is equivalent to the "File > Export -> Bill of Materials CSV" functionality in the GUI.

Original issue from archived repo: tscircuit/v0.0.x-cli#183

[mendarb]

/attempt #1950

Added bom-csv as an export format using the existing circuit-json-to-bom-csv package. PR: #2484

[github-actions]

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