##### SUMMARY

When I run `ansible-galaxy [type] init`, I would like to be able to use my own configured 'skeleton' to init that content.

For Ansible roles, when running `ansible-galaxy role init myrole`, I can configure a [`GALAXY_ROLE_SKELETON`](https://docs.ansible.com/ansible/latest/reference_appendices/config.html#galaxy-role-skeleton) in my `ansible.cfg`, and the init command will use that skeleton as the source for the new role.

For Ansible collections, currently there's a bug (https://github.com/ansible/ansible/issues/66255) that causes collections to use that skeleton if its set (which can lead to some confusion)—but once that bug's fixed, there's no way to specify a skeleton for a collection.

So this feature request is to add a new configuration option `GALAXY_COLLECTION_SKELETON` (environment variable `ANSIBLE_GALAXY_COLLECTION_SKELETON`) which allows a collection skeleton to be specified.

Note: the docs for `GALAXY_ROLE_SKELETON` currently state:

> Role or collection skeleton directory to use as a template for the `init` action in `ansible-galaxy`, same as `--role-skeleton`.

Therefore that would need adjusting too, if the previously mentioned bug doesn't fix that.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME

ansible-galaxy init

##### ADDITIONAL INFORMATION

N/A
))
                else:
                    
                    
                    display.vvv("No 'ansible_collections' directory found at {0}".format(collection_path))
                    continue
                if not collections:
                    display.vvv("No collections found at {0}".format(collection_path))
                    continue
                if output_format in {'yaml', 'json'}:
                    collections_in_paths[collection_path] = {
                        collection.fqcn: {'version': collection.ver} for collection in collections
                    }
                    continue
                
                fqcn_width, version_width = _get_collection_widths(collections)
                _display_header(collection_path, 'Collection', 'Version', fqcn_width, version_width)
                
                for collection in sorted(collections, key=to_text):
                    _display_collection(collection, fqcn_width, version_width)
        
        if collection_found and collection_name:
            warnings = []
        for w in warnings:
            display.warning(w)
        if not path_found:
            raise AnsibleOptionsError("- None of the provided paths were usable. Please specify a valid path with --{0}s-path".format(context.CLIARGS['type']))
        if output_format == 'json':
            display.display(json.dumps(collections_in_paths))
        elif output_format == 'yaml':