poc: warn added widgets require missing clients

[dhayab]

Summary

Result

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 2b06f73:

Sandbox	Source
example-multi-clients	Configuration

[Haroenv]

not related to the api, but personally I think what we should do is replace getWidgetSearchParameters with

getWidgetParameters() {
  return {
    search: ...,
    recommend: ...,
  }
}

(we can detect that the same in index of course, but it seems less hardcoded)

[Haroenv]

main difference is that you don't redo the work twice, once for checking and once for actually setting the parameters. If we have getWidgetParameters, you just translate the parameters, then check if anything set parameters for the reco client.