### Summary

With 22.04 right around the corner I've been testing some ansible on it to prepare for deploying 22.04 hosts. I've got everything worked out except for adding PPAs.

`apt_repository` is still adding the PPA keys to `/etc/apt/trusted.gpg` instead of placing individual key files in `/etc/apt/trusted.gpg.d/`.

`apt-add-repository` puts the individual key files in `/etc/apt/trusted.gpg.d`.

This move has been ongoing for many years with the previous behavior being deprecated and generating warnings.

### Issue Type

Bug Report

### Component Name

apt_repository

### Ansible Version

```console
$ ansible --version
ansible 2.10.8
  config file = None
  configured module search path = ['/home/wonko/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.10.4 (main, Apr  2 2022, 09:04:19) [GCC 11.2.0]
```


### Configuration

```console
$ ansible-config dump --only-changed
```


### OS / Environment

Ubuntu 22.04 (beta)

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)
    - name: Add PPA
      apt_repository:
        repo: ppa:git-core/ppa
        state: present
```


### Expected Results

PPA is added to `/etc/apt/sources.list.d` and gpg key file to be place in `/etc/apt/trusted.gpg.d`

### Actual Results

```console
W: http://ppa.launchpad.net/git-core/ppa/ubuntu/dists/jammy/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
if not module.check_mode:
        apt_get_path = module.get_bin_path('apt-get')
        if apt_get_path:
            rc, so, se = module.run_command([apt_get_path, 'update'])
            if rc != 0:
                module.fail_json(msg="Failed to auto-install %s. Error was: '%s'" % (apt_pkg_name, se.strip()))
            rc, so, se = module.run_command([apt_get_path, 'install', apt_pkg_name, '-y', '-q'])
            if rc != 0:
                module.fail_json(msg="Failed to auto-install %s. Error was: '%s'" % (apt_pkg_name, se.strip()))
    else:
        module.fail_json(msg="%s must be installed to use check mode" % apt_pkg_name)
class InvalidSource(Exception):
    pass
class SourcesList(object):
    def __init__(self, module):
        self.module = module
        self.files = {}  
        
        self.new_repos = set()
        self.default_file = self._apt_cfg_file('Dir::Etc::sourcelist')
        
        if os.path.isfile(self.default_file):
            self.load(self.default_file)
        
        for file in glob.iglob('%s/*.list' % self._apt_cfg_dir('Dir::Etc::sourceparts')):
            self.load(file)
    def __iter__(self):