Add sthal_cli

This is a simple console app that overrides the default STHAL with a
mock one, useful for manual testing.

This is not production code and it is not designed to be rigorous and/
or complete, but rather as a quick tool that can be easily changed to
need.

Test: Manual running and verification of basic functionality
Change-Id: Ibd13a9dd83c163e02e76ce93f28d036d843854d5
diff --git a/soundtrigger/sthal_cli/OWNERS b/soundtrigger/sthal_cli/OWNERS
new file mode 100644
index 0000000..e21b66e
--- /dev/null
+++ b/soundtrigger/sthal_cli/OWNERS
@@ -0,0 +1 @@
+include /media/java/android/media/soundtrigger_middleware/OWNERS