Functions: start generating dictionary functions

[Blargian]

Summary

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs	Error		Comment	Oct 17, 2025 1:06pm

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Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs-jp	Ignored			Oct 17, 2025 1:06pm
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clickhouse-docs-zh	Ignored			Oct 17, 2025 1:06pm

[Copilot]

Pull Request Overview

This PR introduces infrastructure for autogenerating documentation for dictionary functions in ClickHouse.

Key changes:

• Adds "Dictionary" to the list of function categories to be processed
• Configures source and destination file mappings for dictionary function documentation

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[Copilot]

[nitpick] The 'Dictionary' entry is inserted between 'Dates and Times' and 'Encoding', breaking alphabetical ordering. Consider maintaining alphabetical order by placing it after 'Distance' or reorganizing the entire list alphabetically for better maintainability.

Suggested change

	"Dates and Times"
	"Dictionary"
	"Dictionary"
	"Dates and Times"

[Copilot]

[nitpick] The source filename 'dictionary-functions.md' follows the pattern of other entries but is inserted between 'dates_and_times-functions.md' and 'encoding-functions.md'. For consistency and maintainability, consider ordering this list alphabetically or according to the same sequence used in the function categories list.