[bazel][shac] Expand allowed vendor visibility

Refactor `ALLOWED_VENDOR_TARGET_VISIBILITY_LABELS` and
`ALLOWED_VENDOR_LOAD_VISIBILITY_LABELS` in `visibility_utils.py` to
generate their suffix variations from a single sorted
`_VENDOR_PACKAGES_ALLOWED_IN_FUCHSIA_GIT` tuple.

Expand `_VENDOR_PACKAGES_ALLOWED_IN_FUCHSIA_GIT` to include generic
immediate subdirectories of `//vendor/google/` (`boards`, `bundles`,
`products`, `sdk`, `storage`, and `tools`). All of these paths except
`//vendor/google/sdk` already appear in the repository.

With these paths allowed, no violations remain in the repository, so
remove `allowlists/bazel_vendor_paths.json` and set
`supports_allowlist = False` on `VendorPathsCheck`.

Bug: 565897544
Test: python3 scripts/shac/tests/bazel_lint_test.py
Test: prebuilt/tools/shac/shac test scripts/shac/tests/bazel_test.star
Test: fx test --host //scripts/shac/tests:bazel_lint_test @//scripts/shac/tests:bazel_test
Test: fx host-tool shac check --only bazel_vendor_paths --all
Change-Id: I036ba7ff6a2a8fb449082738b16c9db930b3b3d2
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1923573
Reviewed-by: Oliver Newman <olivernewman@google.com>
Commit-Queue: David Dorwin <ddorwin@google.com>