docs: add documentation for kbc llm commands (BETA)

[vojtabiberle]

Changes:

Add documentation for the new LLM export feature:

• kbc llm init: Initialize local directory for LLM export
• kbc llm export: Export project data to AI-optimized twin format

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https://linear.app/keboola/issue/DMD-1014/kbc-llm-documentation

[linear]

DMD-1014 kbc llm documentation

[Copilot]

Pull request overview

This pull request adds comprehensive documentation for the new LLM export feature in the Keboola CLI. The LLM commands enable users to export project data in an AI-optimized "twin format" designed for AI assistants to understand and work with Keboola projects.

Changes:

• Added documentation for kbc llm init command to initialize local directories for LLM export
• Added documentation for kbc llm export command to export project data to AI-optimized format
• Added overview page for LLM commands explaining the workflow and available commands
• Updated the main commands index to include the new LLM commands section

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
cli/commands/llm/init/index.md	Documents the initialization command with options, examples, and interactive prompts
cli/commands/llm/index.md	Provides overview of LLM commands, workflow, and command listing
cli/commands/llm/export/index.md	Comprehensive documentation of the export command including security features, output structure, and examples
cli/commands/index.md	Updated to include LLM commands in the main command reference table

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[Matovidlo]

LGTM