Add "ioBroker" keyword to generated package.json

[Copilot]

PR Checklist:

• Provide a meaningful description to this PR or mention which issues this fixes.
• Ensure the project builds with npm run build
• Add tests for your change. This includes negative tests (i.e. inputs that need to fail) as well as baseline tests (i.e. how should the directory structure look like?).
• Run the test suite with npm test
• If there are baseline changes, review them and make a separate commit for them with the comment "accept baselines" if they are desired changes
• If you added a required option, also add it to the template creation (.github/create_templates.ts)
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Description:

Generated adapters lacked the "ioBroker" keyword in package.json, triggering W0040 warnings during adapter checks.

Changes:

• Modified transformKeywords() to prepend "ioBroker" when not present (case-insensitive check)
• Updated default keywords from ["template", "automation", "IoT", "integration"] to include "ioBroker" as first element
• Added 6 test cases covering keyword transformation, deduplication, and case handling
• Regenerated 23 baseline files to reflect keyword changes

Example behavior:

// User provides custom keywords
transformKeywords("automation, IoT")
// Returns: ["ioBroker", "automation", "IoT"]

// User already includes ioBroker (any case)
transformKeywords("iobroker, custom")
// Returns: ["iobroker", "custom"]  // No duplication

// Default keywords (no user input)
getDefaultAnswer("keywords")
// Returns: ["ioBroker", "template", "automation", "IoT", "integration"]

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Enhancement] Keywords within package.json should contain ioBroker</issue_title>
<issue_description>[W0040] "keywords" within package.json should contain "ioBroker"

Please add 'ioBroker' to keywords section of package.json (noct io-package.json!)</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Enhancement] Keywords within package.json should contain ioBroker #1276

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