Run rust fmt on pre-commit (#2608)

### Description
Tired of the workflow telling you to run `cargo fmt`? Worry no more, now
on commit all your rust code will get checked so you don't have to wait
for the pipeline to fail.

### Drive-by changes

None

### Related issues

### Backward compatibility

Yes

### Testing

manual

.husky/pre-commit

@@ -2,3 +2,4 @@
 . "$(dirname -- "$0")/_/husky.sh"
 
 yarn lint-staged
+cargo fmt --all --check --manifest-path rust/Cargo.toml