feat(benches): implement thread binding with hwlocality

[imrn99]

Description

Scope: benches

Type of change: feat

Content description:

• add a bind-threads feature to the benchmark crate
• read number of threads used for each benchmark from env variables
• read binding policy from env variables
• add binding function and required feature checks
• temporarily disable features in CI, will re-enable when I update the CI in another PR

Additional information

• New dependency: hwlocality

Necessary follow-up

update the CI to enable the bind-threads feature by default in the honeycomb-benches crate

TODO:

• remove the new feature from default; it is temporarily enabled for my dev env to no lint everything new as deadcode
• write the actual threadpool init

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.62%. Comparing base (41a42e2) to head (fb8653a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #337   +/-   ##
=======================================
  Coverage   87.62%   87.62%           
=======================================
  Files          72       72           
  Lines       11370    11370           
=======================================
  Hits         9963     9963           
  Misses       1407     1407           

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