##### 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
gr = GalaxyRole(self.galaxy, self.api, role_name, path=os.path.join(role_path, role_name))
                if os.path.isdir(gr.path):
                    role_found = True
                    display.display('# %s' % os.path.dirname(gr.path))
                    _display_role(gr)
                    break
                warnings.append("- the role %s was not found" % role_name)
            else:
                if not os.path.exists(role_path):
                    warnings.append("- the configured path %s does not exist." % role_path)
                    continue
                if not os.path.isdir(role_path):
                    warnings.append("- the configured path %s, exists, but it is not a directory." % role_path)
                    continue
                display.display('# %s' % role_path)
                path_files = os.listdir(role_path)
                for path_file in path_files:
                    gr = GalaxyRole(self.galaxy, self.api, path_file, path=path)
                    if gr.metadata:
                        _display_role(gr)
        
        if role_found and role_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']))
        return 0
    @with_collection_artifacts_manager
    def execute_list_collection(self, artifacts_manager=None):