Set organization/repository names in the plugins' configs

[rndquu]

Depends on ubiquity-os/ubiquity-os-kernel#224

Plugin installer should always set organization/repository value in the config's plugin property for all of the plugins.

For example here instead of

- plugin: https://ubiquity-os-comment-vector-embeddings-development.ubiquity.workers.dev

plugin installer UI should set org/repo value:

- plugin: ubiquity-os-marketplace/text-vector-embeddings