[OpenMP] Add Maintainers.md file

Author: DavidSpickett

llvm/Maintainers.md

@@ -438,6 +438,8 @@ Others only have a lead maintainer listed here.
 
 [LLDB maintainers](https://github.com/llvm/llvm-project/blob/main/lldb/Maintainers.rst)
 
+[LLVM OpenMP Library maintainers](https://github.com/llvm/llvm-project/blob/main/openmp/Maintainers.md)
+
 #### libc++
 
 Louis Dionne \
@@ -448,14 +450,6 @@ [email protected] (email), [ldionne](https://github.com/ldionne) (GitHub)
 Tom Stellard \
 [email protected] (email), [tstellar](https://github.com/tstellar) (GitHub)
 
-#### OpenMP (runtime library)
-
-Michael Klemm \
-[email protected] (email), [mjklemm](https://github.com/mjklemm) (GitHub)
-
-Terry Wilmarth \
-[email protected] (email), [TerryLWilmarth](https://github.com/TerryLWilmarth) (GitHub)
-
 #### Polly
 
 Tobias Grosser \

openmp/Maintainers.md

@@ -0,0 +1,13 @@
+# LLVM OpenMP Library Maintainers
+
+This file is a list of the
+[maintainers](https://llvm.org/docs/DeveloperPolicy.html#maintainers) for
+the LLVM OpenMP library.
+
+# Current Maintainers
+
+Michael Klemm \
+[email protected] (email), [mjklemm](https://github.com/mjklemm) (GitHub)
+
+Terry Wilmarth \
+[email protected] (email), [TerryLWilmarth](https://github.com/TerryLWilmarth) (GitHub)