remove src from template in favor of <proj_name>/<proj_name>

[WaylonWalker]

Description

As mentioned in #208 it is desired to move from a src directory to a <proj_name>/<proj_name> directory. I did a quick test to see if I could get it to work with just a few changes and it appears that most of the project is working. I would definitely take in any further changes/suggestions/tests. Note I did not test all cli commands, and some such as kedro build-docs and kedro docker may need some updates.

Development notes

1. I moved the contents of the src directory to the {{ cookiecutter.repo_name }} directory.
2. I added includes to the setup.py.

    - packages=find_packages(exclude=["tests"]),
    + packages=find_packages(include=["{{ cookiecutter.python_package }}", "{{ cookiecutter.python_package }}.*"], exclude=["tests"]),

tested my changes manually

cookiecutter /path/to/template

I called the project default_kedro, then ran some various commands to ensure the project was working as expected.

default_kedro # runs the pipeline
kedro run # runs the pipeline
kedro ipython # loads in catalog and context
%run_viz # starts kedro viz

TODO

[ ] kedro build-docs
[ ] kedro docker

Checklist

• Read the contributing guidelines
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change and added my name to the list of supporting contributions in the RELEASE.md file
• Added tests to cover my changes

Notice

• I acknowledge and agree that, by checking this box and clicking "Submit Pull Request":

• I submit this contribution under the Apache 2.0 license and represent that I am entitled to do so on behalf of myself, my employer, or relevant third parties, as applicable.

• I certify that (a) this contribution is my original creation and / or (b) to the extent it is not my original creation, I am authorised to submit this contribution on behalf of the original creator(s) or their licensees.

• I certify that the use of this contribution as authorised by the Apache 2.0 license does not violate the intellectual property rights of anyone else.

I am submitting this as myself Waylon Walker in my own free time.

[yetudada]

Hey @WaylonWalker! Thanks so much for spending time on this PR, we really appreciate it.
I think if we circle back to this one then we'd like to give users the flexibility to choose if they want src or proj_name. We have discovered that this is quite a well-discussed issue in the Python world. So for now I'll park this PR but thank you so much for raising this.

[WaylonWalker]

That sounds like a fantastic idea, thanks for investigating.