Adds OWNERS for Settings aconfig flags, first for Accessibility.

This is similar to frameworks/base/packages/SystemUI/aconfig/OWNERS
and allows subteams to add their own namespace's aconfig flags
without needing to bother the core Settings team for review.

Test: n/a
Change-Id: I562f544e744cf2ae3ce75162c9de92dd89bfadc4
diff --git a/aconfig/OWNERS b/aconfig/OWNERS
new file mode 100644
index 0000000..1131545
--- /dev/null
+++ b/aconfig/OWNERS
@@ -0,0 +1 @@
+per-file settings_accessibility_flag_declarations.aconfig = file:/src/com/android/settings/accessibility/OWNERS