Move quality checks to private package

The targets in this package are only for local testing and do not need
to be exposed to depending Bazel modules. This prevents errors when
querying the whole module when the `aspect_rules_lint` dependency won't
be available.

Signed-off-by: James Wainwright <james.wainwright@lowrisc.org>

Author: jwnrt

.github/workflows/licence-checker.yml

@@ -22,9 +22,9 @@ jobs:
       with:
         python-version: 3.9
     - name: Check formatting with Ruff
-      run: bazel run :format.check
+      run: bazel run //quality:format.check
     - name: Run Licence Checker
-      run: bazel run //:licence-check
+      run: bazel run //quality:licence-check
     - name: Test Licence Checker
       run: |
         cd tests

BUILD

@@ -1,31 +1,3 @@
 # Copyright lowRISC contributors.
 # Licensed under the Apache License, Version 2.0, see LICENSE for details.
 # SPDX-License-Identifier: Apache-2.0
-
-load("//rules:rules.bzl", "licence_check")
-load("@aspect_rules_lint//format:defs.bzl", "format_multirun")
-
-licence_check(
-    name = "licence-check",
-    exclude_patterns = [".style.yapf"],
-    licence = """
-    Copyright lowRISC contributors.
-    Licensed under the Apache License, Version 2.0, see LICENSE for details.
-    SPDX-License-Identifier: Apache-2.0
-    """,
-)
-
-alias(
-    name = "ruff",
-    actual = select({
-        "@bazel_tools//src/conditions:linux_x86_64": "@ruff_x86_64-unknown-linux-gnu//:ruff",
-        "@bazel_tools//src/conditions:linux_aarch64": "@ruff_aarch64-unknown-linux-gnu//:ruff",
-        "@bazel_tools//src/conditions:darwin_arm64": "@ruff_aarch64-apple-darwin//:ruff",
-        "@bazel_tools//src/conditions:darwin_x86_64": "@ruff_x86_64-apple-darwin//:ruff",
-    }),
-)
-
-format_multirun(
-    name = "format",
-    python = ":ruff",
-)

quality/BUILD

@@ -0,0 +1,33 @@
+# Copyright lowRISC contributors.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+load("//rules:rules.bzl", "licence_check")
+load("@aspect_rules_lint//format:defs.bzl", "format_multirun")
+
+package(default_visibility = ["//visibility:private"])
+
+licence_check(
+    name = "licence-check",
+    exclude_patterns = [".style.yapf"],
+    licence = """
+    Copyright lowRISC contributors.
+    Licensed under the Apache License, Version 2.0, see LICENSE for details.
+    SPDX-License-Identifier: Apache-2.0
+    """,
+)
+
+alias(
+    name = "ruff",
+    actual = select({
+        "@bazel_tools//src/conditions:linux_x86_64": "@ruff_x86_64-unknown-linux-gnu//:ruff",
+        "@bazel_tools//src/conditions:linux_aarch64": "@ruff_aarch64-unknown-linux-gnu//:ruff",
+        "@bazel_tools//src/conditions:darwin_arm64": "@ruff_aarch64-apple-darwin//:ruff",
+        "@bazel_tools//src/conditions:darwin_x86_64": "@ruff_x86_64-apple-darwin//:ruff",
+    }),
+)
+
+format_multirun(
+    name = "format",
+    python = ":ruff",
+)