Auto merge of #47180 - varkor:range-iterator-overrides, r=alexcrichton
Add iterator method specialisations to Range* Add specialised implementations of `max` for `Range`, and `last`, `min` and `max` for `RangeInclusive`, all of which lead to significant advantages in the generated assembly on x86. Note that adding specialisations of `min` and `last` for `Range` led to no benefit, and adding `sum` for `Range` and `RangeInclusive` led to type inference issues (though this is possibly still worthwhile considering the performance gain). This addresses some of the concerns in #39975.
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