…citly.

#21276 worked together with the
internal changes but broke the standalone build of the Go extractor of
this repo in isolation.

The root cause was the lack of an auto-loaded `java_library` rule
definition. This fixes it.

I also checked this doesn't happen anywhere else.

Turns out in #21371 I was right
about `java_*` rules not relying on autoload anywhere, but it turns out
some `cc_*` rules still relied on autoload. This autoload is currently
configured in the internal repository, but we want to remove it
eventually. This patch:
* adds explicit loads to `rules_cc`
* removes an obsolete file (that depedency has its own bazel module
  since some time, we just forgot to remove the old file)

Go: fix standalone build of the Go extractor

…rs about missing extensionals.

Bazel: load `rules_cc` and `rules_shell` explicitly

Rust: Add support for neutral models.