Wrap document insertion methods in transaction

[sandreae]

In insert_document perform two db insertions, these should be wrapped in a transaction.

Fix for: #254 and hopefully #247

📋 Checklist

• Add tests that cover your changes
• Add this PR to the Unreleased section in CHANGELOG.md
• Link this PR to any issues it closes
• New files contain a SPDX license header

[codecov]

Codecov Report

Merging #259 (d4c4b09) into main (81a7bf7) will decrease coverage by 0.03%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main     #259      +/-   ##
==========================================
- Coverage   94.02%   93.98%   -0.04%     
==========================================
  Files          59       59              
  Lines        4936     4940       +4     
==========================================
+ Hits         4641     4643       +2     
- Misses        295      297       +2     

Impacted Files	Coverage Δ
aquadoggo/src/db/stores/document.rs	92.06% <50.00%> (-0.91%)	⬇️

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[adzialocha]

hopefully #247

I've ran it locally and still got the failing tests 😿

But thanks for that fix 👍

[sandreae]

I've ran it locally and still got the failing tests crying_cat_face

Boo! I ran it and didn't get fails... I was optimistic 😢