Added support for kedro namespaces for parameters

[DmitriyLamzin]

Now params which defined as outer_namespace.inner_namespace.param_name are converted to the following structure before adding to the pipeline:

{
  "outer_namespace": {
      "inner_namespace": {
        "param_name": "value",
        ...
      },
      "another_inner_namespace": {
        "param_name": "value"
        ...
      }
  }
}

Description

describe the purpose of the change here

Resolves https://github.com/getindata/kedro-kubeflow/issues/219

PR Checklist

• [X] Tests added
• [X] Changelog updated

[szczeles]

Looks great, @DmitriyLamzin! Thanks for your contribution

[DmitriyLamzin]

Looks like CI is broken. I don't think my changes could break it.

[szczeles]

@DmitriyLamzin You're right, the CI is broken, I have the fix ready, and we will merge it on Monday.

[szczeles]

@DmitriyLamzin Released as 0.7.4 :tada: