dynamodb: updated get all query and added configurable limit

[kristinapathak]

fixes #229

[codecov]

Codecov Report

Merging #230 (fd60335) into main (d987861) will increase coverage by 0.17%.
The diff coverage is 60.86%.

❗ Current head fd60335 differs from pull request most recent head 2ec1bbb. Consider uploading reports for the commit 2ec1bbb to get more accurate results

@@            Coverage Diff             @@
##             main     #230      +/-   ##
==========================================
+ Coverage   62.87%   63.04%   +0.17%     
==========================================
  Files          18       18              
  Lines        1099     1115      +16     
==========================================
+ Hits          691      703      +12     
- Misses        387      391       +4     
  Partials       21       21              

Impacted Files	Coverage Δ
store/dynamodb/db.go	46.80% <0.00%> (ø)
store/dynamodb/service.go	83.91% <63.63%> (-1.13%)	⬇️

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[kcajmagic]

Looks good.

Took me awhile to think through the gauge metric, good use.

[CLAassistant]

All committers have signed the CLA.

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

76.2% Coverage
0.0% Duplication