Apply licenses with rules_license

tools/BUILD.bazel

@@ -3,6 +3,11 @@
 # SPDX-License-Identifier: BSD-3-Clause
 
 load("@rules_python//python:py_binary.bzl", "py_binary")
+load("@hedron_compile_commands//:refresh_compile_commands.bzl", "refresh_compile_commands")
+
+package(
+    default_applicable_licenses = ["//:license"],
+)
 
 py_binary(
     name = "fix_line_endings",
@@ -11,3 +16,8 @@ py_binary(
     ],
     visibility = ["//:__subpackages__"],
 )
+
+refresh_compile_commands(
+    name = "refresh_clangd",
+    targets = "//...",
+)