AK: Add min() and max() methods to Array<T, N>

...That are only defined when min() and max() are defined on the
elements.

AK/Array.h

@@ -66,6 +66,26 @@ struct Array {
  return Size;
  }
 
+ constexpr T max() requires(requires(T x, T y) { x < y; })
+ {
+ static_assert(Size > 0, "No values to max() over");
+
+ T value = __data[0];
+ for (size_t i = 1; i < Size; ++i)
+ value = AK::max(__data[i], value);
+ return value;
+ }
+
+ constexpr T min() requires(requires(T x, T y) { x > y; })
+ {
+ static_assert(Size > 0, "No values to min() over");
+
+ T value = __data[0];
+ for (size_t i = 1; i < Size; ++i)
+ value = AK::min(__data[i], value);
+ return value;
+ }
+
  T __data[Size];
 };