[v0.5.0] feat: add eventually-postgres implementation with sqlx

[ar3s3ru]

Currently blocked by #231

[codecov[bot]]

Codecov Report

Base: 76.09% // Head: 75.00% // Decreases project coverage by -1.09% :warning:

Coverage data is based on head (9f7a2af) compared to base (28f7896). Patch coverage: 6.89% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #219      +/-   ##
==========================================
- Coverage   76.09%   75.00%   -1.10%     
==========================================
  Files          24       19       -5     
  Lines        1531     1204     -327     
==========================================
- Hits         1165      903     -262     
+ Misses        366      301      -65     

Impacted Files	Coverage Δ
eventually-postgres/src/repository.rs	0.00% <0.00%> (ø)
eventually/src/aggregate.rs	88.50% <0.00%> (-0.25%)	:arrow_down:
eventually/src/aggregate/root.rs	87.17% <0.00%> (-4.72%)	:arrow_down:
examples/bank-accounting/src/domain.rs	51.61% <0.00%> (-0.68%)	:arrow_down:
eventually/src/aggregate/repository.rs	86.20% <100.00%> (+9.54%)	:arrow_up:
examples/bank-accounting/src/main.rs	3.70% <0.00%> (-0.15%)	:arrow_down:
examples/bank-accounting/src/grpc.rs	0.00% <0.00%> (ø)
eventually-redis/tests/store.rs	98.75% <0.00%> (+0.31%)	:arrow_up:
eventually/src/test/store.rs	91.30% <0.00%> (+0.39%)	:arrow_up:
examples/bank-accounting/src/application.rs	83.00% <0.00%> (+0.66%)	:arrow_up:
... and 6 more

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[ar3s3ru]

Closed as #231 already partially addressed the content of this PR.