Scope models and plugins together

[Akryum]

Clear and concise description of the problem

There is no explicit API to apply plugins to specific models. Related to #3

Suggested solution

Based on storing a connection id in model's meta, for example meta.sourceId.

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.