feat: MongoDB BulkWrite, multiple index creation, and doc helper func

[DRK3]

• Added a BulkWrite method that allows a caller to directly call the MongoDB BulkWrite function with their own custom models
• Updated the CreateCustomIndex function to accept multiple index models at once (and updated the name to CreateCustomIndexes)
• Exposed the PrepareDataForBSONStorage helper function

Signed-off-by: Derek Trider Derek.Trider@securekey.com

[codecov[bot]]

Codecov Report

Merging #263 (e9c2251) into main (be476b6) will decrease coverage by 1.83%. The diff coverage is 81.81%.

:exclamation: Current head e9c2251 differs from pull request most recent head 3cc1365. Consider uploading reports for the commit 3cc1365 to get more accurate results

@@            Coverage Diff             @@
##             main     #263      +/-   ##
==========================================
- Coverage   88.30%   86.47%   -1.84%     
==========================================
  Files           1        1              
  Lines         804      806       +2     
==========================================
- Hits          710      697      -13     
- Misses         52       64      +12     
- Partials       42       45       +3     

Impacted Files	Coverage Δ
component/storage/mongodb/store.go	86.47% <81.81%> (-1.84%)	:arrow_down:

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