Create CODEOWNERS

Signed-off-by: David Galiffi <David.Galiffi@amd.com>

.github/CODEOWNERS

@@ -0,0 +1,6 @@
+* @koomie @coleramos425
+
+# Documentation files
+docs/* @ROCm/rocm-documentation
+*.md @ROCm/rocm-documentation
+*.rst @ROCm/rocm-documentation