feat: adds ssl certificate list endpoint

[becelot]

Adds certificatesFind endpoint to client sdk

Closes #28

[codecov]

Codecov Report

Merging #27 (375c7c1) into main (5f42e81) will increase coverage by 0.24%.
The diff coverage is 91.48%.

❗ Current head 375c7c1 differs from pull request most recent head 1a176b7. Consider uploading reports for the commit 1a176b7 to get more accurate results

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
+ Coverage   86.16%   86.40%   +0.24%     
==========================================
  Files          31       33       +2     
  Lines         990     1037      +47     
==========================================
+ Hits          853      896      +43     
- Misses        137      141       +4     

Flag	Coverage Δ
unit	86.40% <91.48%> (+0.24%)	⬆️

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Impacted Files	Coverage Δ
hostingde/ssl/ssl.py	80.00% <80.00%> (ø)
hostingde/model/ssl.py	96.66% <96.66%> (ø)
hostingde/client.py	100.00% <100.00%> (ø)

[Seenox]

Thanks!