Add the janitors and someone from Studio.

Studio uses this too, not just the platform build.

Test: treehugger
Change-Id: I65c8a8f150e4d10ca31f67a816c9882d46f08ebf
diff --git a/tools/zipalign/OWNERS b/tools/zipalign/OWNERS
new file mode 100644
index 0000000..d701e4a
--- /dev/null
+++ b/tools/zipalign/OWNERS
@@ -0,0 +1,2 @@
+include platform/system/core:/janitors/OWNERS
+sanglardf@google.com