feat(seatbelt)!: no more default features

[martintmk]

as the number of middlewares grows, we don't want to enable all these. Let consumer pick which one they want to use.

[github-actions]

⚠️ Breaking Changes Detected

--- failure feature_not_enabled_by_default: package feature is not enabled by default ---

Description:
A feature is no longer enabled by default for this package. This will break downstream crates which rely on the package's default features and require the functionality of this feature.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#cargo-feature-remove-another
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/feature_not_enabled_by_default.ron

Failed in:
  feature retry in the package's Cargo.toml
  feature timeout in the package's Cargo.toml
  feature breaker in the package's Cargo.toml
  feature fallback in the package's Cargo.toml

If the breaking changes are intentional then everything is fine - this message is merely informative.

Remember to apply a version number bump with the correct severity when publishing a version with breaking changes (1.x.x -> 2.x.x or 0.1.x -> 0.2.x).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.0%. Comparing base (da791c4) to head (0be8c20).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #303   +/-   ##
=======================================
  Coverage   100.0%   100.0%           
=======================================
  Files         147      147           
  Lines        9004     9004           
=======================================
  Hits         9004     9004           

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[geeknoid]

Any doc updates needed?

[martintmk]

Any doc updates needed?

nothing in particular for this particular change