Split up zeroing library BUILD rules

There was no good reason for one build rule to have both the interface
and a bunch of implementations; split it up and make the relevant users
depend on the libraries directly.

Change-Id: If6a0aa49dd7ea588b7325604658bc0594db4aac0
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2022_bot3/control_loops/superstructure/BUILD b/y2022_bot3/control_loops/superstructure/BUILD
index 7d89a0a..5b44e2a 100644
--- a/y2022_bot3/control_loops/superstructure/BUILD
+++ b/y2022_bot3/control_loops/superstructure/BUILD
@@ -75,6 +75,7 @@
         "//aos/events:event_loop",
         "//frc971/control_loops:control_loop",
         "//frc971/control_loops/drivetrain:drivetrain_status_fbs",
+        "//frc971/zeroing:pot_and_absolute_encoder",
         "//y2022_bot3:constants",
     ],
 )