* Relocate module validator code and tests.
* Fix validate-modules entry point and imports.
* Fix paths and test entry points.
* Fix up unit tests.
* Fix shebang and execute bit.
* Relocate ansible-only sanity tests.
* Get "code smell" sanity tests from multiple dirs.
- `test/lib/ansible_test/_data/sanity/code-smell/` - General purpose tests used for both Ansible and Ansible Collections.
- `test/sanity/code-smell/` - Tests specific to Ansible, will not be used for Ansible Collections.