Move aos/controls to frc971/control_loops

Also put what was aos/controls/control_loops.fbs in y2012/control_loops
because that's the only user.

Change-Id: I8f402b0708103077e135a41e55ef5e4f23681d87
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>
diff --git a/y2021_bot3/control_loops/superstructure/BUILD b/y2021_bot3/control_loops/superstructure/BUILD
index 6c716a5..24cc73f 100644
--- a/y2021_bot3/control_loops/superstructure/BUILD
+++ b/y2021_bot3/control_loops/superstructure/BUILD
@@ -59,7 +59,7 @@
         ":superstructure_output_fbs",
         ":superstructure_position_fbs",
         ":superstructure_status_fbs",
-        "//aos/controls:control_loop",
+        "//frc971/control_loops:control_loop",
         "//aos/events:event_loop",
         "//y2021_bot3:constants",
     ],