3078 otp generator

[cakekoa]

What does this PR do?

Fixes part of #3078 by adding a class that generates OTPs.

PR Checklist

• Have you added an explanation of what your changes do and why you'd like to include them?
• Is the TravisCI build passing?
• Was the CHANGELOG.md updated to reflect the changes?
• Was the documentation framework updated to reflect the changes?
• Have you checked that you haven't introduced any duplicate code?

Testing Checklist

• Added relevant unit tests?
• Do all unit tests pass?
• Do all end-to-end tests pass?
• Any other testing performed?

  Tested by {Running the Monkey locally with relevant config/running Island/...}

• If applicable, add screenshots or log transcripts of the feature working

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (develop@e3f04ea). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #3187   +/-   ##
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  Coverage           ?   72.81%           
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  Files              ?      471           
  Lines              ?    13450           
  Branches           ?        0           
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  Hits               ?     9793           
  Misses             ?     3657           
  Partials           ?        0           

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