Python: Move to the new packaging rules.

python/tools/BUILD.bazel

@@ -1,11 +1,14 @@
-load("@semmle_code//:dist.bzl", "pack_zip")
+load("//misc/bazel:pkg.bzl", "codeql_pkg_files")
 
-pack_zip(
+codeql_pkg_files(
     name = "tools",
-    srcs = glob(["**/*"]),
-    excludes = [
-        "BUILD.bazel",
-    ] + glob(["recorded-call-graph-metrics/**"]),
+    exes = glob(
+        ["**/*"],
+        exclude = [
+            "BUILD.bazel",
+            "recorded-call-graph-metrics/**",
+        ],
+    ),
     prefix = "tools",
-    visibility = ["//visibility:public"],
+    visibility = ["//python:__pkg__"],
 )