Add Climber class and tests

For now, it is a simple pass through.

Change-Id: I5274b03f6ade23fbc98713cf8ed849866a85b429
diff --git a/y2020/control_loops/superstructure/BUILD b/y2020/control_loops/superstructure/BUILD
index b9bbcf0..87ee689 100644
--- a/y2020/control_loops/superstructure/BUILD
+++ b/y2020/control_loops/superstructure/BUILD
@@ -55,6 +55,7 @@
         "superstructure.h",
     ],
     deps = [
+        ":climber",
         ":superstructure_goal_fbs",
         ":superstructure_output_fbs",
         ":superstructure_position_fbs",
@@ -103,3 +104,20 @@
         "//y2020/control_loops/superstructure/intake:intake_plants",
     ],
 )
+
+cc_library(
+    name = "climber",
+    srcs = [
+        "climber.cc",
+    ],
+    hdrs = [
+        "climber.h",
+    ],
+    deps = [
+        ":superstructure_goal_fbs",
+        ":superstructure_output_fbs",
+        "//aos/controls:control_loop",
+        "//frc971/control_loops:control_loops_fbs",
+        "//frc971/control_loops:profiled_subsystem_fbs",
+    ],
+)