Added y2018 wpilib_interface, and constants

Change-Id: I9499fc4fbb34434372583e8e2a572740b60a4715
diff --git a/y2018/control_loops/superstructure/intake/BUILD b/y2018/control_loops/superstructure/intake/BUILD
new file mode 100644
index 0000000..bb6fec7
--- /dev/null
+++ b/y2018/control_loops/superstructure/intake/BUILD
@@ -0,0 +1,29 @@
+genrule(
+    name = "genrule_intake",
+    outs = [
+        "intake_plant.h",
+        "intake_plant.cc",
+        "intake_delayed_plant.h",
+        "intake_delayed_plant.cc",
+    ],
+    cmd = "$(location //y2018/control_loops/python:intake) $(OUTS)",
+    tools = [
+        "//y2018/control_loops/python:intake",
+    ],
+)
+
+cc_library(
+    name = "intake_plants",
+    srcs = [
+        "intake_delayed_plant.cc",
+        "intake_plant.cc",
+    ],
+    hdrs = [
+        "intake_delayed_plant.h",
+        "intake_plant.h",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//frc971/control_loops:state_feedback_loop",
+    ],
+)