ci: migrate to hatch

[P403n1x87]

Description of the Change

Migrate from Poetry to Hatch. This helps consolidate metadata sources and remove the dependency on nox.

Alternate Designs

N. A.

Regressions

N.A.

Verification Process

Existing test suite

[codecov]

Codecov Report

Base: 77.16% // Head: 77.24% // Increases project coverage by +0.08% 🎉

Coverage data is based on head (e078870) compared to base (979304d).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
+ Coverage   77.16%   77.24%   +0.08%     
==========================================
  Files          13       13              
  Lines        1099     1103       +4     
  Branches      146      159      +13     
==========================================
+ Hits          848      852       +4     
  Misses        204      204              
  Partials       47       47              

Impacted Files	Coverage Δ
austin/format/mojo.py	86.32% <0.00%> (+0.11%)	⬆️
austin/simple.py	91.66% <0.00%> (+0.17%)	⬆️
austin/aio.py	89.28% <0.00%> (+0.19%)	⬆️

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