Account for CPU time spent on handshakes in bach sims

[maddeleine]

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Problem:

Bach tests currently don't attribute any cost to the TLS operations during the QUIC handshake. Mark opened a PR to add this cost, however, it's clear that doing this change will be a fair bit of work since the new bach times will cause tests to fail, needing more investigation. Also we want to take a different approach by using the offloading feature to attribute the CPU more precisely.

Need By Date:

N/A

Solution:

Use offloading feature to attribute CPU for TLS operations.

Requirements / Acceptance Criteria:

Tests pass. Sims show up with more accurate handshake times.

Out of scope: