Add TargetSelectorHint channel

Change-Id: Icd9cd061a25bcbe8c1ade786a714bc66799f1831
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>
diff --git a/y2023/control_loops/drivetrain/BUILD b/y2023/control_loops/drivetrain/BUILD
index 09e5137..416d6d9 100644
--- a/y2023/control_loops/drivetrain/BUILD
+++ b/y2023/control_loops/drivetrain/BUILD
@@ -122,3 +122,12 @@
     gen_reflections = 1,
     visibility = ["//visibility:public"],
 )
+
+flatbuffer_cc_library(
+    name = "target_selector_hint_fbs",
+    srcs = [
+        ":target_selector_hint.fbs",
+    ],
+    gen_reflections = 1,
+    visibility = ["//visibility:public"],
+)