feat: add audio provider

[HolbyFPV]

Use

const providers = zebar.createProviderGroup({
  audio: { type: 'audio' }
})

{output.audio?.defaultPlaybackDevice?.name}
{output.audio?.defaultPlaybackDevice?.volume}

Sample output

"output": {
  "defaultPlaybackDevice": {
    "deviceId": "{0.0.0.00000000}.{799aa664-9aa0-43b1-ba2b-e571d8d82644}",
    "isDefault": true,
    "name": "Speakers (High Definition Audio Device)",
    "volume": 20
  },
  "playbackDevices": [
    {
      "deviceId": "{0.0.0.00000000}.{0dda7b4f-ee76-46c6-b06f-8a065ab8443b}",
      "isDefault": false,
      "name": "DELL P2416D (NVIDIA High Definition Audio)",
      "volume": 24
    },
    {
      "deviceId": "{0.0.0.00000000}.{53b3315a-61b1-417e-b9ea-4ab6adcd0059}",
      "isDefault": false,
      "name": "ROG PG279QM (NVIDIA High Definition Audio)",
      "volume": 37
    },
    {
      "deviceId": "{0.0.0.00000000}.{799aa664-9aa0-43b1-ba2b-e571d8d82644}",
      "isDefault": true,
      "name": "Speakers (High Definition Audio Device)",
      "volume": 20
    }
  ]
}

Closes #127. Only available on Windows.

[github-actions]

🎉 This PR is included in version 2.6.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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