Add smtp port for mastodon, add valkey restore to `restore_mastodon`, and update textual + rich

[jessebot]

• add smtp port for mastodon to secret_keys. example:

  apps:
  mastodon:
    argo:
      # secrets keys to make available to Argo CD ApplicationSets
      secret_keys:
        # smtp port on your mail server
        smtp_port: '25'

• clean up restore_mastodon function to include valkey replica and primary pvc restores, and update config to allow setting their snapshot IDs during restores:

  apps:
  mastodon:
    init:
      restore:
        restic_snapshot_ids:
          mastodon_valkey_primary: latest
          mastodon_valkey_replica: latest

• closes #326
• closes #315