Adds additional ft detection patterns

[Wnthr]

Adding support for the following filetype patterns:

playbook.y(a)ml playbook2.y(a)ml tasks/foo.y(a)ml

The last one used for include_tasks when not using roles.

[Wnthr]

Ran the lsp on my file and had some minor changes, added those as well, but if that's a problem, let me know and I will revert those changes.