JobResult Table Re-design - Improved task- and machine- granularity

[nharper285]

Summary of the Pull Request

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PR Checklist

• [ ] Applies to work item: #3512
• [ ] CLA signed. If not, go over here and sign the CLI.
• [ ] Tests added/passed
• [ ] Requires documentation to be updated
• [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx

Info on Pull Request

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Validation Steps Performed

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[codecov-commenter]

Codecov Report

Merging #3539 (99818f9) into main (0390822) will increase coverage by 0.02%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #3539      +/-   ##
==========================================
+ Coverage   39.97%   40.00%   +0.02%     
==========================================
  Files         303      303              
  Lines       37698    37678      -20     
  Branches     1725     1728       +3     
==========================================
+ Hits        15070    15072       +2     
+ Misses      22307    22285      -22     
  Partials      321      321              

Files	Coverage Δ
src/agent/onefuzz-result/src/job_result.rs	6.66% <0.00%> (-0.36%)	:arrow_down:
.../ApiService/ApiService/Functions/QueueJobResult.cs	0.00% <0.00%> (ø)
src/ApiService/ApiService/OneFuzzTypes/Model.cs	69.46% <0.00%> (+0.39%)	:arrow_up:
...rvice/ApiService/onefuzzlib/JobResultOperations.cs	3.63% <0.00%> (+1.00%)	:arrow_up:

... and 1 file with indirect coverage changes