[WIP] example of wasmtime implementing cpu limit

[rayowang]

What this PR does:
example of wasmtime implementing cpu limit
Which issue(s) this PR fixes:
#607

[codecov]

Codecov Report

Merging #751 (3086c55) into main (11db6f2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #751   +/-   ##
=======================================
  Coverage   60.60%   60.60%           
=======================================
  Files         133      133           
  Lines        8318     8318           
=======================================
  Hits         5041     5041           
  Misses       2700     2700           
  Partials      577      577           

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[github-actions]

This pull request has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in 7 days if no further activity occurs. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!

[github-actions]

This pull request has been automatically closed because it has not had activity in the last 37 days. Please feel free to give a status update now, ping for review, or re-open when it's ready. Thank you for your contributions!