[libc++] Implements ranges::enable_borrowed_range

This is the initial patch to implement ranges in libc++.

Implements parts of:
- P0896R4 One Ranges Proposal
- P1870 forwarding-range is too subtle
- LWG3379 in several library names is misleading

Reviewed By: ldionne, #libc, cjdb, zoecarver, Quuxplusone

Differential Revision: https://reviews.llvm.org/D90999

GitOrigin-RevId: 01ace074fcb6a497fc16b1578fc10480dc7d563d
diff --git a/include/module.modulemap b/include/module.modulemap
index 56b49c4..c970082 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -409,6 +409,10 @@
     export initializer_list
     export *
   }
+  module ranges {
+    header "ranges"
+    export *
+  }
   module ratio {
     header "ratio"
     export *