Replace ByteArray with std::array for p2p messages
Replace ByteArray with std::array for p2p messages

Summary: Replace ByteArray with std::array for p2p messages

Test Plan: Unit tests and system tests

Reviewers: cbrown

Reviewed By: cbrown

Subscribers: dapirian, #onair-engineering

Maniphest Tasks: T5

Differential Revision: https://phabricator.watchonair.tv/D1124

[This commit was only partially migrated from livelib commit 7f78d04592172b93472ad19a60f771c3a4f6b5c6.]
bittorrent/okui,bittorrent/okui,bittorrent/okui,bittorrent/okui,bittorrent/okui