Investigate better TLV API to SDK consumer

[yunhanw-google]

I am very worried about exposing the raw TLV to SDK consumers. The TLV reader API is not particularly easy to use, unfortunately. Again, I guess we can do this for the moment, but it seems to me that we're eventually going to want a nicer API. What the size cost of that would be is a hard question, but I would really like something safer to use than "here, read some tlv; good luck", especially when the rules around reading TLV are not well-internalized even by CHIP developers and are not well-described in the spec.

#5198 (review)

[bzbarsky-apple]

The real question is whether "here's the TLV for the event list" is the right API at all to expose as an external SDK API.

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[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.