Import buildifier

This patch sets up buildifier to run as part of CI. It can also be run
manually via `//tools/lint:buildifier`.

As a consequence, I needed to make the whole repo conform.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: Ic41c97b17255813b6c21aef40ab2f8a216683a2c
diff --git a/frc971/analysis/BUILD b/frc971/analysis/BUILD
index 4850f97..0269d65 100644
--- a/frc971/analysis/BUILD
+++ b/frc971/analysis/BUILD
@@ -1,11 +1,10 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@npm_bazel_typescript//:defs.bzl", "ts_library")
-load("@com_google_protobuf//:protobuf.bzl", "py_proto_library")
-load("@build_bazel_rules_nodejs//:defs.bzl", "nodejs_binary", "rollup_bundle")
+load("@build_bazel_rules_nodejs//:defs.bzl", "rollup_bundle")
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library", "flatbuffer_ts_library")
 load("//aos:config.bzl", "aos_config")
 
+package(default_visibility = ["//visibility:public"])
+
 cc_binary(
     name = "py_log_reader.so",
     srcs = ["py_log_reader.cc"],
diff --git a/frc971/autonomous/BUILD b/frc971/autonomous/BUILD
index c7f2d20..9698ed6 100644
--- a/frc971/autonomous/BUILD
+++ b/frc971/autonomous/BUILD
@@ -1,8 +1,8 @@
-package(default_visibility = ["//visibility:public"])
-
 load("//aos:config.bzl", "aos_config")
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library")
 
+package(default_visibility = ["//visibility:public"])
+
 flatbuffer_cc_library(
     name = "auto_fbs",
     srcs = ["auto.fbs"],
diff --git a/frc971/codelab/BUILD b/frc971/codelab/BUILD
index d69bf53..673e0b2 100644
--- a/frc971/codelab/BUILD
+++ b/frc971/codelab/BUILD
@@ -1,8 +1,8 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library")
 load("//aos:config.bzl", "aos_config")
 
+package(default_visibility = ["//visibility:public"])
+
 cc_binary(
     name = "basic_test",
     testonly = 1,
diff --git a/frc971/control_loops/BUILD b/frc971/control_loops/BUILD
index c7a5dd7..e058e11 100644
--- a/frc971/control_loops/BUILD
+++ b/frc971/control_loops/BUILD
@@ -1,8 +1,8 @@
-package(default_visibility = ["//visibility:public"])
-
 load("//aos:config.bzl", "aos_config")
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library")
 
+package(default_visibility = ["//visibility:public"])
+
 cc_library(
     name = "control_loop_test",
     testonly = True,
diff --git a/frc971/control_loops/drivetrain/BUILD b/frc971/control_loops/drivetrain/BUILD
index d50c1f9..eaf37db 100644
--- a/frc971/control_loops/drivetrain/BUILD
+++ b/frc971/control_loops/drivetrain/BUILD
@@ -1,11 +1,11 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library", "flatbuffer_ts_library")
 load("//aos:config.bzl", "aos_config")
 load("//tools/build_rules:select.bzl", "cpu_select")
 load("//aos:flatbuffers.bzl", "cc_static_flatbuffer")
 load("@npm_bazel_typescript//:defs.bzl", "ts_library")
 
+package(default_visibility = ["//visibility:public"])
+
 flatbuffer_cc_library(
     name = "spline_goal_fbs",
     srcs = ["spline_goal.fbs"],
diff --git a/frc971/input/BUILD b/frc971/input/BUILD
index 5b5c5d1..90e5ce6 100644
--- a/frc971/input/BUILD
+++ b/frc971/input/BUILD
@@ -1,8 +1,8 @@
-package(default_visibility = ["//visibility:public"])
-
 load("//aos:config.bzl", "aos_config")
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library")
 
+package(default_visibility = ["//visibility:public"])
+
 cc_library(
     name = "joystick_input",
     srcs = [
diff --git a/frc971/queues/BUILD b/frc971/queues/BUILD
index 44ee59e..17b610c 100644
--- a/frc971/queues/BUILD
+++ b/frc971/queues/BUILD
@@ -1,7 +1,7 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library")
 
+package(default_visibility = ["//visibility:public"])
+
 flatbuffer_cc_library(
     name = "gyro_fbs",
     srcs = [
diff --git a/frc971/wpilib/BUILD b/frc971/wpilib/BUILD
index 049efae..2c8ed29 100644
--- a/frc971/wpilib/BUILD
+++ b/frc971/wpilib/BUILD
@@ -1,9 +1,9 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@npm_bazel_typescript//:defs.bzl", "ts_library")
 load("@com_github_google_flatbuffers//:build_defs.bzl", "flatbuffer_cc_library", "flatbuffer_ts_library")
 load("//aos:config.bzl", "aos_config")
 
+package(default_visibility = ["//visibility:public"])
+
 flatbuffer_cc_library(
     name = "logging_fbs",
     srcs = [