Agora RTC Objective-C API Reference Refactor

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- accelerate_rate : RemoteAudioTrackStats
- advancedConfig : LocalAccessPointConfiguration
- advancedFeatureCount : LiveTranscoding
- advancedFeatures : LiveTranscoding
- advancedSettings : EncodedAudioFrameInfo
- advanceOptions : VideoEncoderConfiguration
- allowBluetooth : AudioSessionConfiguration
- allowBluetoothA2DP : AudioSessionConfiguration
- allowDeviceChange : LoopbackRecordingOption
- allowDuckOthers : AudioSessionConfiguration
- allowMixWithOthers : AudioSessionConfiguration
- alpha : MixerLayoutConfig , RtcImage , TranscodingUser , TranscodingVideoStream , VideoCompositingLayout::Region
- alphaBuffer : ExternalVideoFrame , VideoFrame
- ana_statistics : ILocalUser::LocalAudioDetailedStats
- apm_statistics : ILocalUser::LocalAudioDetailedStats
- appData : VideoCompositingLayout
- appDataLength : VideoCompositingLayout
- appDefinedStartTimeMs : TConnectSettings
- appId : AgoraServiceConfiguration , RtcEngineContext
- appName : LoopbackAudioTrackConfig
- areaCode : AgoraServiceConfiguration , RtcEngineContext
- audienceLatencyLevel : ChannelMediaOptions , ClientRoleOptions
- audio : IExtensionControl::Capabilities
- audio_level : ILocalUser::LocalAudioDetailedStats , RemoteAudioTrackStats
- audio_loss_rate : RemoteAudioTrackStats
- audio_volume : ILocalAudioTrack::LocalAudioTrackStats
- audioBitrate : DirectCdnStreamingStats , InjectStreamConfig , LiveTranscoding
- audioBitsPerSample : PlayerStreamInfo
- audioChannel : TranscodingUser
- audioChannels : PlayerStreamInfo , InjectStreamConfig , LiveTranscoding
- audioCodecProfile : LiveTranscoding
- audioConfig : RtmpConnectionConfiguration
- audioDelayMs : ChannelMediaOptions
- audioDeviceDelay : LocalAudioStats
- audioLevelIndication : PacketOptions
- audioLossRate : RemoteAudioStats
- audioOnly : RtmpConnectionConfiguration
- audioProcessingChannels : AdvancedAudioOptions
- audioProfile : AudioEncoderConfiguration
- audioRecvEncodedFrame : RtcConnectionConfiguration
- audioRecvMediaPacket : RtcConnectionConfiguration
- audioSampleRate : PlayerStreamInfo , InjectStreamConfig , LiveTranscoding
- audioScenario : AgoraServiceConfiguration , RtcEngineContext
- audioSpectrumData : AudioSpectrumData
- audioTrackNumber : IAudioFrameObserverBase::AudioFrame
- autoPlay : MediaSource
- autoRegisterAgoraExtensions : RtcEngineContext
- autoSubscribeAudio : ChannelMediaOptions , RtcConnectionConfiguration
- autoSubscribeVideo : ChannelMediaOptions , RtcConnectionConfiguration
- availableBandwidth : LastmileProbeOneWayResult
- avsync_type : VideoFrame , IAudioFrameObserverBase::AudioFrame
- avSyncTimeMs : RemoteVideoStats , RemoteVideoTrackStats