This PR adds a scaletest workspace-traffic command for load testing. This opens a
ReconnectingPTY connection to each scaletest workspace (via coderd) and
concurrently writes and reads random data to/from the PTY. Payloads are of the
form #${RANDOM_ALPHANUMERIC_STRING}, which essentially drops garbage
comments in the remote shell, and should not result in any commands being executed.
* fix(docs): fix markdown docs links
More than half of them were actually valid links but, due to missing file extensions were flagged as invalid. I added a file extension, so it should pass now.
* Updated docgen to include extension
