🔐 Allow for keyring to be used in place of bitwarden for password management only

[jessebot]

Describe the feature you'd like, and why

Add support for local keyring, for people who don't use Bitwarden, and would like to use the password manager feature.

It probably makes sense to make a new module here called keyring.py:
https://github.com/small-hack/smol-k8s-lab/tree/main/smol_k8s_lab

We could use this module:
https://pypi.org/project/keyring/

Once this was implemented though, every app that support init with bitwarden would need to be updated. This includes:

• nextcloud
• mastodon
• matrix
• zitadel
• argocd