Ask permission to publish channel

Channels.kt

try {
    val intent = Intent(TvContractCompat.ACTION_REQUEST_CHANNEL_BROWSABLE)
    intent.putExtra(TvContractCompat.EXTRA_CHANNEL_ID, channelId)
    startActivityForResult(intent, REQUEST_CHANNEL_BROWSABLE)
} catch (exception: ActivityNotFoundException) {
    // Handle exception
}