feat: use DateTime abstraction from apalis-sql

[Himmelschmidt]

Use DateTime and DateTimeExt from apalis-sql instead of direct chrono dependency.

Adds chrono and time feature flags for datetime library selection.

Related: apalis-dev/apalis#655

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 3 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/from_row.rs	88.88%	1 Missing ⚠️
src/lib.rs	50.00%	1 Missing ⚠️
src/shared.rs	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[geofmureithi]

@Himmelschmidt Did you run tests locally? I think you are basing your HEAD an old version and need to rebase

[Himmelschmidt]

@Himmelschmidt Did you run tests locally? I think you are basing your HEAD an old version and need to rebase

I have run the tests and aside from the doctest there were no failures. I didn't fix it before, figured it might be out of scope, fixed it now.

But I don't think that's what you were talking about

[geofmureithi]

I didn't fix it before, figured it might be out of scope, fixed it now.

But the previous doctests passed, what changed?

[geofmureithi]

Commits must have verified signatures.

@Himmelschmidt