example: add fraud detection and benchmark examples

[parano]

What does this PR address?

Fixes #(issue)

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• Does the Pull Request follow Conventional Commits specification naming? Here are GitHub's
  guide on how to create a pull request.
• Does the code follow BentoML's code style, both make format and make lint script have passed (instructions)?
• Did you read through contribution guidelines and follow development guidelines?
• Did your changes require updates to the documentation? Have you updated
  those accordingly? Here are documentation guidelines and tips on writting docs.
• Did you write tests to cover your changes?

[codecov]

Codecov Report

Merging #3647 (d175c06) into main (6e1af19) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3647   +/-   ##
=======================================
  Coverage   31.98%   31.98%           
=======================================
  Files         146      146           
  Lines       12039    12039           
  Branches     1989     1989           
=======================================
  Hits         3851     3851           
  Misses       7915     7915           
  Partials      273      273           

[aarnphm]

cc @ssheng LGTM