【RTC 4.5.2 Native platforms APIs&Release notes】

[Suri539]

Hi there, the English docs of API refs and release are ready for review and release.

Please generate the api refs based on this tag, which includes all doc fixes since last update: https://github.com/AgoraIO/agora_doc_source/releases/tag/v4.5.2-native-source

The release notes are located in the same old folder: https://github.com/AgoraIO/agora_doc_source/tree/master/markdown/RTC%204.x/release-notes/en-US/native

Cheers!