Create dir for build-time system feature infra

Create a base tools/ directory that will contain infra to support
build-time (PackageManager) system feature definitions and code.

Test: NA
Bug: 203143243
Change-Id: If2fbadec7f9331638064229c755021856b02fa48
diff --git a/tools/systemfeatures/OWNERS b/tools/systemfeatures/OWNERS
new file mode 100644
index 0000000..66c8506
--- /dev/null
+++ b/tools/systemfeatures/OWNERS
@@ -0,0 +1 @@
+include /PERFORMANCE_OWNERS