chore: add http/pprof server over unix socket for debug #295
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re: coder/coder#14726
Adds a pprof goroutine dump listening on a unix domain socket at a well known path beneath the terraform work directory. E.g.
/home/coder/.cache/coder/provisioner-0/work/.coder/pprof
with our default cache directory on coderd.This should allow us to further diagnose the
text file busy
error, by seeing where things are hung in the goroutine dump.