Add encryption metadata for data packets (#1127)

* override minimatch version

* Add encryption metadata for data packets

* generated protobuf

* add key index

* generated protobuf

* encrypt envelope

* generated protobuf

* more explicit encryption messages

* generated protobuf

* whitespace

* Create cold-feet-worry.md

* try fix build

* manual fix

* generated protobuf

* next id

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Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: lukasIO

.changeset/cold-feet-worry.md

@@ -0,0 +1,6 @@
+---
+"@livekit/protocol": minor
+"github.com/livekit/protocol": minor
+---
+
+Add encryption metadata for data packets