Agora RTC Objective-C API Reference Refactor

### - _ -

- __AGORA_REF_COUNTED_OBJECT_H__ : AgoraRefCountedObject.h
- __deprecated : AgoraMediaBase.h , AgoraBase.h

### - a -

- ADD_COMPARE : IAgoraRtcEngine.h
- AGORA_API : AgoraBase.h
- AGORA_CALL : AgoraBase.h
- AGORA_CPP_API : AgoraBase.h

### - b -

- BEGIN_COMPARE : IAgoraRtcEngine.h
- BUMP_MAJOR_VERSION : AgoraExtensionVersion.h
- BUMP_MICRO_VERSION : AgoraExtensionVersion.h
- BUMP_MINOR_VERSION : AgoraExtensionVersion.h

### - c -

- CONSTEXPR : AgoraOptional.h

### - d -

- DECLARE_CREATE_AND_REGISTER_PROVIDER : AgoraExtensionProviderEntry.h
- DECLARE_CREATE_AND_REGISTER_PROVIDER_PTR : AgoraExtensionProviderEntry.h

### - e -

- END_COMPARE : IAgoraRtcEngine.h

### - g -

- getAgoraRtcEngineErrorDescription : IAgoraRtcEngine.h
- getAgoraRtcEngineVersion : IAgoraRtcEngine.h

### - h -

- HERE_IS_EMPTY_HEADER : AgoraDemoHeader.h

### - i -

- INVALID_DISPLAY_ID : AgoraBase.h

### - k -

- KEY_PLAYER_ENABLE_AUDIO : AgoraMediaPlayerTypes.h
- KEY_PLAYER_ENABLE_SEARCH_METADATA : AgoraMediaPlayerTypes.h
- KEY_PLAYER_ENABLE_VIDEO : AgoraMediaPlayerTypes.h
- KEY_PLAYER_REAL_TIME_STREAM_ANALYZE_DURATION : AgoraMediaPlayerTypes.h
- KEY_PLAYER_SEI_FILTER_TYPE : AgoraMediaPlayerTypes.h
- KEY_RTC_AUDIO_RESEND : IAgoraParameter.h
- KEY_RTC_CONNECTION_LOST_PERIOD : IAgoraParameter.h
- KEY_RTC_LOCAL_IP : IAgoraParameter.h
- KEY_RTC_NETWORK_INTERFACE : IAgoraParameter.h
- KEY_RTC_UDP_PORT_LIST : IAgoraParameter.h
- KEY_RTC_UDP_PORT_RANGE : IAgoraParameter.h
- KEY_RTC_UDP_SEND_FD : IAgoraParameter.h
- KEY_RTC_VIDEO_BITRATE_ADJUST_RATIO : IAgoraParameter.h
- KEY_RTC_VIDEO_CODEC_INDEX : IAgoraParameter.h
- KEY_RTC_VIDEO_DEGRADATION_FPS_DOWN_STEP : IAgoraParameter.h
- KEY_RTC_VIDEO_DEGRADATION_FPS_UP_STEP : IAgoraParameter.h
- KEY_RTC_VIDEO_DEGRADATION_PREFERENCE : IAgoraParameter.h
- KEY_RTC_VIDEO_ENABLED_HW_DECODER : IAgoraParameter.h
- KEY_RTC_VIDEO_ENABLED_HW_ENCODER : IAgoraParameter.h
- KEY_RTC_VIDEO_H264_QP_THRESHOLD_HIGH : IAgoraParameter.h
- KEY_RTC_VIDEO_H264_QP_THRESHOLD_LOW : IAgoraParameter.h
- KEY_RTC_VIDEO_HARDWARE_DECODING : IAgoraParameter.h
- KEY_RTC_VIDEO_HARDWARE_ENCODEING : IAgoraParameter.h
- KEY_RTC_VIDEO_HW_DECODER_PROVIDER : IAgoraParameter.h
- KEY_RTC_VIDEO_HW_ENCODER_PROVIDER : IAgoraParameter.h
- KEY_RTC_VIDEO_MINBITRATE_RATIO : IAgoraParameter.h
- KEY_RTC_VIDEO_MINOR_STREAM_CODEC_INDEX : IAgoraParameter.h
- KEY_RTC_VIDEO_OVERRIDE_SMALLVIDEO_NOT_USE_HWENC_POLICY : IAgoraParameter.h
- KEY_RTC_VIDEO_QUALITY_SCALE_ONLY_ON_AVERAGE_QP : IAgoraParameter.h
- KEY_RTC_VIDEO_RESEND : IAgoraParameter.h

### - m -

- MAX_CONTENT_INSPECT_MODULE_COUNT : AgoraMediaBase.h
- MAX_PATH_260 : AgoraBase.h
- MAX_VERSION_LEN : NGIAgoraExtensionAiAec.h

### - n -

- NOEXCEPT : AgoraOptional.h

### - o -

- OPTIONAL_DECLSPEC_EMPTY_BASES : AgoraOptional.h
- OPTIONAL_ENUM_CLASS : NGIAgoraVideoFrame.h , IAgoraLog.h , AgoraRefPtr.h
- OPTIONAL_ENUM_SIZE_T : AgoraMediaBase.h
- OPTIONAL_LOG_LEVEL_SPECIFIER : IAgoraLog.h
- OPTIONAL_NULLPTR : AgoraBase.h
- OPTIONAL_OVERRIDE : NGIAgoraAudioTrack.h , NGIAgoraVideoTrack.h
- OPTIONAL_PROCESSRESULT_SPECIFIER : NGIAgoraMediaNode.h
- OPTIONAL_REFCOUNTRELEASESTATUS_SPECIFIER : AgoraRefCountedObject.h

### - r -

- REPLACE_BY : IAgoraRtcEngine.h

### - s -

- SET_FROM : IAgoraRtcEngine.h
- setAgoraRtcEngineExternalSymbolLoader : IAgoraRtcEngine.h