Agora RTC Objective-C API Reference Refactor

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- SCREEN_CAPTURE : agora::rtc
- SCREEN_CAPTURE_FRAMERATE_CAPABILITY_15_FPS : agora::rtc
- SCREEN_CAPTURE_FRAMERATE_CAPABILITY_30_FPS : agora::rtc
- SCREEN_CAPTURE_FRAMERATE_CAPABILITY_60_FPS : agora::rtc
- SCREEN_SCENARIO_DOCUMENT : agora::rtc
- SCREEN_SCENARIO_GAMING : agora::rtc
- SCREEN_SCENARIO_RDC : agora::rtc
- SCREEN_SCENARIO_VIDEO : agora::rtc
- SECONDARY_CAMERA_SOURCE : agora::media
- SECONDARY_SCREEN_SOURCE : agora::media
- SINGING_BEAUTIFIER : agora::rtc
- SingleNalUnit : agora::rtc
- SM4_128_ECB : agora::rtc
- SPEECH_DRIVEN_VIDEO_SOURCE : agora::media
- STATE_CONNECTED : agora::rtc
- STATE_CONNECTING : agora::rtc
- STATE_DISCONNECTED : agora::rtc
- STATE_FAILED : agora::rtc
- STATE_RECONNECTED : agora::rtc
- STATE_RECONNECTING : agora::rtc
- STREAM_FALLBACK_OPTION_AUDIO_ONLY : agora::rtc
- STREAM_FALLBACK_OPTION_DISABLED : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_1 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_2 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_3 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_4 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_5 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LAYER_6 : agora::rtc
- STREAM_FALLBACK_OPTION_VIDEO_STREAM_LOW : agora::rtc
- STREAM_LAYER_1 : agora::rtc
- STREAM_LAYER_2 : agora::rtc
- STREAM_LAYER_3 : agora::rtc
- STREAM_LAYER_4 : agora::rtc
- STREAM_LAYER_5 : agora::rtc
- STREAM_LAYER_6 : agora::rtc
- STREAM_LAYER_COUNT_MAX : agora::rtc
- STREAM_LOW : agora::rtc
- STREAM_TYPE_AUDIO : agora::media::base , agora::media
- STREAM_TYPE_BOTH : agora::media
- STREAM_TYPE_SUBTITLE : agora::media::base
- STREAM_TYPE_UNKNOWN : agora::media::base
- STREAM_TYPE_VIDEO : agora::media::base , agora::media
- STREAMING_SRC_ERR_BAD_STATE : agora::rtc
- STREAMING_SRC_ERR_BUFFER_OVERFLOW : agora::rtc
- STREAMING_SRC_ERR_BUFFER_UNDERFLOW : agora::rtc
- STREAMING_SRC_ERR_CLOSE : agora::rtc
- STREAMING_SRC_ERR_CODECCLOSE : agora::rtc
- STREAMING_SRC_ERR_CODECOPEN : agora::rtc
- STREAMING_SRC_ERR_CODECPROC : agora::rtc
- STREAMING_SRC_ERR_EOF : agora::rtc
- STREAMING_SRC_ERR_EXIST : agora::rtc
- STREAMING_SRC_ERR_EXPIRED : agora::rtc
- STREAMING_SRC_ERR_INVALID_PARAM : agora::rtc
- STREAMING_SRC_ERR_NO_MEM : agora::rtc
- STREAMING_SRC_ERR_NONE : agora::rtc
- STREAMING_SRC_ERR_NOT_EXIST : agora::rtc
- STREAMING_SRC_ERR_NOT_FOUND : agora::rtc
- STREAMING_SRC_ERR_OPEN : agora::rtc
- STREAMING_SRC_ERR_READ : agora::rtc
- STREAMING_SRC_ERR_SEEK : agora::rtc
- STREAMING_SRC_ERR_TIMEOUT : agora::rtc
- STREAMING_SRC_ERR_UNKNOWN : agora::rtc
- STREAMING_SRC_ERR_UNSUPPORTED : agora::rtc
- STREAMING_SRC_ERR_WRITE : agora::rtc
- STREAMING_SRC_STATE_CLOSED : agora::rtc
- STREAMING_SRC_STATE_EOF : agora::rtc
- STREAMING_SRC_STATE_ERROR : agora::rtc
- STREAMING_SRC_STATE_IDLE : agora::rtc
- STREAMING_SRC_STATE_OPENING : agora::rtc
- STREAMING_SRC_STATE_PLAYING : agora::rtc
- STREAMING_SRC_STATE_SEEKING : agora::rtc
- STYLE_TRANSFORMATION_POPULAR : agora::rtc
- STYLE_TRANSFORMATION_RNB : agora::rtc
- SUB_STATE_IDLE : agora::rtc
- SUB_STATE_NO_SUBSCRIBED : agora::rtc
- SUB_STATE_SUBSCRIBED : agora::rtc
- SUB_STATE_SUBSCRIBING : agora::rtc