http2: perf_hooks integration

Collect and report basic timing information about `Http2Session`
and `Http2Stream` instances.

Backport-PR-URL: https://github.com/nodejs/node/pull/18050
Backport-PR-URL: https://github.com/nodejs/node/pull/20456
PR-URL: https://github.com/nodejs/node/pull/17906
Refs: https://github.com/nodejs/node/issues/17746


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>