Fix imports

[nkaradzhov]

Description

Describe your pull request here

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested? -> N/A
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[Copilot]

Pull Request Overview

This PR addresses the import issues by updating and uncommenting several export statements to improve module accessibility and consistency.

• Updated exports in the time-series, search, redis, and client packages.
• Revised the documentation in docs/v4-to-v5.md to reflect renamed constants and exports.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/time-series/lib/index.ts	Added export for TIME_SERIES_REDUCERS from MRANGE_GROUPBY module.
packages/search/lib/index.ts	Updated various exports from commands to align with new naming conventions.
packages/redis/index.ts	Uncommented exports to expose modules from redis packages.
packages/client/index.ts	Uncommented error exports and updated command exports for GEO_REPLY_WITH and REDIS_FLUSH_MODES.
docs/v4-to-v5.md	Updated documentation to reflect the new export names.

[bobymicroby]

LGTM