Add YAMAHA devices support

[bluekirin55]

Pre-Request Checklist

• Passes rubocop code analysis (try rubocop --auto-correct)
• Tests added or adapted (try rake test)
• Changes are reflected in the documentation
• User-visible changes appended to CHANGELOG.md

Description

Add YAMAHA network devices support.
I just tested my YAMAHA NVR500 only. But it's possible to work other YAMAHA devices.

[mortzu]

Please add your changes to the documentation (docs/Supported-OS-Types.md) and CHANGELOG.md

[bluekirin55]

Hi, I wrote the documentation (docs/Supported-OS-Types.md) and CHANGELOG.md.
And I fixed some script (lib/model/yamaha.rb). Please check these files.

Thank you.