feature: allow progress message for external tools without lsp

[rtgiskard]

Did you check the docs?

• I have read all the noice.nvim docs

Is your feature request related to a problem? Please describe.

Here is the case:

I want to call external tools to check something, it may take several seconds to finish, I'd like to have a notification when it's run, and change the notification once it's done, then delete the notification with a delay.

The notification may display just like the lsp progress message, but without a real lsp server.

Describe the solution you'd like

fidget provides the capability, but it would be better if noice provide similar api, so that all messages are handled in one place.

Describe alternatives you've considered

fidget as an independent message backend

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.