Platform: Select which schema changes to apply

[dkelly-airbyte]

Describe the feature request
We would like the ability to select which schema changes should be accepted when notified.

Describe the solution you'd like
From the list of schema changes detected, allow each one to be accepted or rejected.

Additional context
If we have a lot of schema changes in our connector, we want to only approve certain field changes but the current UI only allows to approve all field changes.

I want to get A in without B being removed (yet) -> as introducing both changes will cause downstream failures in our pipelines. At some point, I maybe ready to remove B but I want the freedom to choose what to introduce when there are any schema changes.