feat(ci): cache

[JaeAeich]

cache invalidation in github actions:

• use composite actions to reduce redundancy
• cache pipx installations
• cache poetry installation

fixes - #174

PS: Roughly 50% reduction in time :) on tests, lint etc.
Edit: upto ~67%.

[JaeAeich]

PS: not completed and not converting to draft because need to test CI :)

[sourcery-ai]

Hey @JaeAeich - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 3 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.21%. Comparing base (0b81865) to head (7a4cb0b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #178   +/-   ##
=======================================
  Coverage   98.21%   98.21%           
=======================================
  Files           8        8           
  Lines         559      559           
=======================================
  Hits          549      549           
  Misses         10       10           

Flag	Coverage Δ
test_unit	98.21% <ø> (ø)

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[uniqueg]

PS: not completed and not converting to draft because need to test CI :)

Alright :) Just tag me when it's ready for review

[uniqueg]

Great stuff! I'm on my phone so it's a bit hard to review all details. But since it runs fine, I think it should be good. Two minor things, one maybe an oversight, the other a matter of opinion, I guess.