Initial import of octets-0.1.0

Since the source doesn't contain a license file, this change is
made from:
  $ get_rust_pkg.py -o /tmp octets-0.1.0
  $ cp -R /tmp/octets-0.1.0/. .
  $ cp ${ANDROID_BUILD_TOP}/external/rust/crates/quiche/LICENSE .
  $ add3prf.py

Bug: 233719694
Test: N/A
Change-Id: Icdd83bb76f0ebfd87022bc18abb6a966ffe0a368
8 files changed