[feat] clang-tidy: add deps argument

This partially ports erenon/bazel_clang_tidy@b8c0567
to extend the support of hermetic toolchains.

The `deps` argument lets users control the visibility of the hermetic
gcc install during the clang-tidy run.

Author: Synss

lint/clang_tidy.bzl

@@ -51,6 +51,8 @@ def _gather_inputs(ctx, compilation_context, srcs):
     inputs = srcs + ctx.files._configs
     if (any(ctx.files._global_config)):
         inputs.append(ctx.files._global_config[0])
+    for dep in ctx.files._deps:
+        inputs.append(dep)
     return depset(inputs, transitive = [compilation_context.headers])
 
 def _toolchain_env(ctx, user_flags, action_name = ACTION_NAMES.cpp_compile):
@@ -423,6 +425,7 @@ def lint_clang_tidy_aspect(
         configs = [],
         global_config = [],
         gcc_install_dir = [],
+        deps = [],
         header_filter = "",
         lint_target_headers = False,
         angle_includes_are_system = True,
@@ -444,6 +447,7 @@ def lint_clang_tidy_aspect(
             files which may be used for formatting fixes.
         global_config: label of a single global .clang-tidy file to pass to clang-tidy on the command line. This
             will cause clang-tidy to ignore any other config files in the source directories.
+        deps: labels of additional dependencies used during the clang-tidy run.
         gcc_install_dir: optional, label of a `Directory` from the skylib library pointing to the gcc install
             directory.  The argument is passed to the underlying clang as `--gcc-install-dir`.
         header_filter: optional, set to a posix regex to supply to clang-tidy with the -header-filter option
@@ -474,6 +478,9 @@ def lint_clang_tidy_aspect(
                 default = global_config,
                 allow_files = True,
             ),
+            "_deps": attr.label_list(
+                default = deps,
+            ),
             "_gcc_install_dir": attr.label_list(
                 default = gcc_install_dir,
                 providers = [DirectoryInfo],