Finish auto-converting most of the gyp files.

I've also started writing down which ones need manual work.

Change-Id: I442782e1e3352e0de32b612f1bd2c167f231495a
diff --git a/frc971/zeroing/BUILD b/frc971/zeroing/BUILD
new file mode 100644
index 0000000..7209886
--- /dev/null
+++ b/frc971/zeroing/BUILD
@@ -0,0 +1,30 @@
+package(default_visibility = ['//visibility:public'])
+
+cc_library(
+  name = 'zeroing',
+  srcs = [
+    'zeroing.cc',
+  ],
+  hdrs = [
+    'zeroing.h',
+  ],
+  deps = [
+    '//frc971/control_loops:queues',
+  ],
+)
+
+cc_test(
+  name = 'zeroing_test',
+  srcs = [
+    'zeroing_test.cc',
+  ],
+  deps = [
+    '//third_party/gtest',
+    '//aos/common:queue_testutils',
+    ':zeroing',
+    '//aos/common/util:thread',
+    '//aos/common:die',
+    '//frc971/control_loops:position_sensor_sim',
+    '//frc971/control_loops:queues',
+  ],
+)