Make sure project logs of INFO level are shown

[antonymilne]

Note. Technically this is non-breaking, but best to do this following #2426, which is a breaking change. Hence this is for 0.19.0.

We are removing logging.yml from the project template (see #2281). However, there's a subtle piece of functionality that exists in project-side logging.yml that's not easily reproduced in the framework-side one: the project-side logging.yml has something like this:

loggers:
  kedro:
    level: INFO

  iris:
    level: INFO

It's not possible to put this in the framework-side logging.yml because you don't know what the project name is there. We can achieve this by adding it in the Python code in framework/project/__init__.py though by using PACKAGE_NAME (defined in configure_project), something like this:

logging_config["loggers"].append(PACKAGE_NAME: {"level": "INFO"})

Originally posted by @AntonyMilneQB in #2281 (comment)

[astrojuanlu]

Closed by gh-2684!