Add Reolink audio noise reduction number entity

[starkillerOG]

Breaking change

Proposed change

Add Reolink audio noise reduction number entity
0 = no noise reduction
5 = highest level of noise reduction

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Add Reolink audio noise reduction docs home-assistant.io#41591
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[Copilot]

Pull Request Overview

This PR adds a new "Audio noise reduction" number entity for Reolink cameras that allows users to control the audio noise reduction level from 0 to 5.

Key Changes

• Adds a new noise_reduction number entity with configurable values 0-5
• Includes translation strings and state-based icons
• Entity is disabled by default and uses the Baichuan API methods for get/set operations

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
homeassistant/components/reolink/number.py	Adds new noise_reduction number entity description with cmd_key "439" and baichuan API methods
homeassistant/components/reolink/strings.json	Adds translation key "noise_reduction" with name "Audio noise reduction"
homeassistant/components/reolink/icons.json	Defines icons for noise reduction entity with state-based icon for value 0

[abmantis]

There are now conflicts from the other merged PR

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[abmantis]

Thanks!