Add some OWNERS to CachedAppOptimizer file

This will simplify reviews as multiple folks develop on this file
but are not yet owners.

Test: NA
Bug: 264896530
Change-Id: I07c4543c947c3e240416f26a8a3cdbe6c728dfd7
diff --git a/PERFORMANCE_OWNERS b/PERFORMANCE_OWNERS
new file mode 100644
index 0000000..9452ea3
--- /dev/null
+++ b/PERFORMANCE_OWNERS
@@ -0,0 +1,5 @@
+timmurray@google.com
+edgararriaga@google.com
+dualli@google.com
+carmenjackson@google.com
+philipcuadra@google.com