[Aaqibhafeezkhan]

Closes #42

What this changes

• Add modeldiff init <directory> to generate a ready-to-use starter project.
• Generate a two-case suite with an exact check and a JSON Schema check.
• Add baseline and candidate replay configurations.
• Include matching recorded outputs clearly labelled as placeholders.
• Print commands to validate, run and compare the generated suite.
• Refuse non-empty directories unless --force is provided.
• With --force, write only the starter files and preserve unrelated existing content.
• Update the README quick start.

Tests

• Added CLI coverage for starter project generation and the complete offline workflow.
• Added overwrite protection and --force preservation tests.

[github-actions]

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[Aaqibhafeezkhan]

Added offline starter suite