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[pylint] Implement invalid-bool-return-type (E304) (#10377)

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## Summary

Implement `E304` in the issue #970. Throws an error when the returning value
of `__bool__` method is not boolean.

Reference: https://pylint.readthedocs.io/en/stable/user_guide/messages/error/invalid-bool-returned.html

## Test Plan

Add test cases and run `cargo test`
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boolean 2024-03-13 23:13:45 +09:00 • committed by GitHub
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crates/ruff_linter/src/codes.rs
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@ -240,6 +240,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
(Pylint, "E0237") => (RuleGroup::Stable, rules::pylint::rules::NonSlotAssignment),
(Pylint, "E0241") => (RuleGroup::Stable, rules::pylint::rules::DuplicateBases),
(Pylint, "E0302") => (RuleGroup::Stable, rules::pylint::rules::UnexpectedSpecialMethodSignature),
(Pylint, "E0304") => (RuleGroup::Preview, rules::pylint::rules::InvalidBoolReturnType),
(Pylint, "E0307") => (RuleGroup::Stable, rules::pylint::rules::InvalidStrReturnType),
(Pylint, "E0604") => (RuleGroup::Stable, rules::pylint::rules::InvalidAllObject),
(Pylint, "E0605") => (RuleGroup::Stable, rules::pylint::rules::InvalidAllFormat),