Changeable media language in addon settings

*I'm submitting a ...*
- [ ] bug report
- [x] feature request
- [ ] support request

## General infomration
Latest Netflix addon, running on an Amlogic S905X mediabox, on CoreElec 8.95.6 (latest).

### Prerequisites

* [ ] Are you running the latest version? Yes.

### Description
I live in Hungary, I have a Netflix account registered here. If I choose in kodi to use hungarian audio in first place, the Netflix addon alwayas starts playing the media in german language with German subtitle. I think, it would be useful to have a checkbox in the Settings menu, to use the original audio stream (english in most cases).

[Description of the bug or feature]

### Steps to Reproduce

1. [First Step]
2. [Second Step]
3. [and so on...]

**Expected behavior:** [What you expected to happen]

**Actual behavior:** [What actually happened]

## Context (Environment)

### Installation

* [x ] I installed the plugin via zip from the Releases page
* [ ] I´m using the Netflix Repo
* [ ] I´m using a different source (Please tell which)

### Operating System

* [ ] Linux (x86/x64)
* [ ] OSX (x86/x64)
* [ ] Windows (x86/x64)
* [x ] Linux (ARM)
* [ ] Android

#### Additional informatin on the environment

[Descripe your environment a bit more detailed, are you using LibreElec f.e.]

## Debug log

[Please include a link to your debug log (use something like [http://sprunge.us/](http://sprunge.us/)) or similar, please do not paste]

## Other information

[e.g. detailed explanation, related issues, suggestions how to fix, links for us to have context, etc.]

### Screenshots

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[You can erase any parts of this template not applicable to your Issue.]

The issue names the Netflix addon's Settings menu and its media language selection, but no files, tests, or entry points. Start by locating the settings definition and the playback language-selection path, then clarify the precedence between Kodi's preferred language, original audio, and subtitles; done means the requested setting behaves consistently.

Written by the indexing model from the issue text.