[libc++][ranges] Implement ranges::minmax and ranges::minmax_element

Reviewed By: var-const, #libc, ldionne

Spies: sstefan1, ldionne, BRevzin, libcxx-commits, mgorny

Differential Revision: https://reviews.llvm.org/D120637

NOKEYCHECK=True
GitOrigin-RevId: 58d9ab70aef3d7ad5b34c525afc430e122409054
diff --git a/include/module.modulemap b/include/module.modulemap
index 044809f..5bf3b34 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -303,6 +303,8 @@
       module ranges_max_element       { private header "__algorithm/ranges_max_element.h" }
       module ranges_min               { private header "__algorithm/ranges_min.h" }
       module ranges_min_element       { private header "__algorithm/ranges_min_element.h" }
+      module ranges_minmax            { private header "__algorithm/ranges_minmax.h" }
+      module ranges_minmax_element    { private header "__algorithm/ranges_minmax_element.h" }
       module ranges_mismatch          { private header "__algorithm/ranges_mismatch.h" }
       module ranges_swap_ranges       { private header "__algorithm/ranges_swap_ranges.h" }
       module ranges_transform         { private header "__algorithm/ranges_transform.h" }