Greengrass Implement resource_definition_version APIs

[cm-iwata]

Implement these APIs

• list_resource_definition_versions
• get_resource_definition_version

[bblommers]

LGTM - happy to merge if you resolve the conflicts

[cm-iwata]

@bblommers
I fixed conflicts.
Please review again.

[codecov-commenter]

Codecov Report

Merging #5237 (42dc58c) into master (6a1a8ee) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #5237   +/-   ##
=======================================
  Coverage   95.86%   95.86%           
=======================================
  Files         688      688           
  Lines       68240    68265   +25     
=======================================
+ Hits        65419    65444   +25     
  Misses       2821     2821           

Flag	Coverage Δ
servertests	36.38% <8.00%> (-0.02%)	⬇️
unittests	95.80% <100.00%> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
moto/greengrass/urls.py	100.00% <ø> (ø)
moto/greengrass/models.py	99.36% <100.00%> (+0.02%)	⬆️
moto/greengrass/responses.py	100.00% <100.00%> (ø)

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[github-actions]

This is now part of moto >= 3.1.14.dev14