Manual clamp variant for min and max

What it does

Replaces manual implementations of Ord::min and Ord::max with those methods.

Advantage

The code becomes more concise, (subjectively) clearer and doesn’t use any control flow.

Drawbacks

In const context, primitives can be compared but the Ord methods cannot be called (as yet). The lint should not trigger in this case.

Example

if x > y {
    y
} else {
    x
}

Could be written as:

x.min(y)

Note that if the comparison were x >= y then the suggested code should be y.min(x).

Comparison with existing lints

The two cases, min and max, can each be considered half of manual_clamp, and should probably just be part of that lint.

Additional Context

No response