feat: room metadata

[jibon57]

Issue Template

Description

During developing a web conferencing solution we often need to store few room related information so that we can use those in various scenario. At present we can set metadata during join and with tracks. Having a dedicated API/option to set room metadata will be helpful, may be during generate join token. Also should have API method to update those metadata & client should receive events based on update. Without having this option will be hard during development.

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Expected Behavior

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Actual Behavior

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Additional Information

Related discussion: #358

[giangndm]

This resolved with #386, #379