Include WindowManager owners in core/res/OWNERS

Resources used in WindowManager Core are added to frameworks/base/core/res/ so we often run into problem where WindowManager owners can't fully approve CLs that have trivial changes in resource files.

Bug: 262439469
Change-Id: Ifdf283aed9b7803ca403bec2e5c21c3dfcc4e824
Test: manual
diff --git a/core/res/OWNERS b/core/res/OWNERS
index a2ef400..b878189 100644
--- a/core/res/OWNERS
+++ b/core/res/OWNERS
@@ -21,6 +21,11 @@
 tsuji@google.com
 yamasani@google.com
 
+# WindowManager team
+# TODO(262451702): Move WindowManager configs out of config.xml in a separate file
+per-file core/res/res/values/config.xml = file:/services/core/java/com/android/server/wm/OWNERS
+per-file core/res/res/values/symbols.xml = file:/services/core/java/com/android/server/wm/OWNERS
+
 # Resources finalization
 per-file res/xml/public-staging.xml = file:/tools/aapt2/OWNERS
 per-file res/xml/public-final.xml = file:/tools/aapt2/OWNERS