Add Ansible Lens extension

[jan-krueger]

Ansible Lens is a language server that brings go-to-definition, find-references, hover, completion, and undefined-variable diagnostics to nested Ansible & Jinja2 variables - resolving them across group_vars, host_vars, role defaults/vars, and set_fact/register.

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: Jan Krüger.
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[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @jan-krueger on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[jan-krueger]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!