[flake8-bugbear] Implement loop-iterator-mutation (B909) (#9578)

## Summary
This PR adds the implementation for the current
[flake8-bugbear](https://github.com/PyCQA/flake8-bugbear)'s B038 rule.
The B038 rule checks for mutation of loop iterators in the body of a for
loop and alerts when found.

Rational: 
Editing the loop iterator can lead to undesired behavior and is probably
a bug in most cases.

Closes #9511.

Note there will be a second iteration of B038 implemented in
`flake8-bugbear` soon, and this PR currently only implements the weakest
form of the rule.
I'd be happy to also implement the further improvements to B038 here in
ruff 🙂
See https://github.com/PyCQA/flake8-bugbear/issues/454 for more
information on the planned improvements.

## Test Plan
Re-using the same test file that I've used for `flake8-bugbear`, which
is included in this PR (look for the `B038.py` file).


Note: this is my first time using `rust` (beside `rustlings`) - I'd be
very happy about thorough feedback on what I could've done better
🙂 - Bring it on 😀

crates/ruff_linter/src/codes.rs

@@ -378,6 +378,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8Bugbear, "035") => (RuleGroup::Stable, rules::flake8_bugbear::rules::StaticKeyDictComprehension),
         (Flake8Bugbear, "904") => (RuleGroup::Stable, rules::flake8_bugbear::rules::RaiseWithoutFromInsideExcept),
         (Flake8Bugbear, "905") => (RuleGroup::Stable, rules::flake8_bugbear::rules::ZipWithoutExplicitStrict),
+        (Flake8Bugbear, "909") => (RuleGroup::Preview, rules::flake8_bugbear::rules::LoopIteratorMutation),
 
         // flake8-blind-except
         (Flake8BlindExcept, "001") => (RuleGroup::Stable, rules::flake8_blind_except::rules::BlindExcept),