FIX #159 - Refactor CLI to make mlflow.yml read and write more flexible to different configuration logic

[Galileo-Galilei]

Description

Fix #159

Development notes

• Remove dynamic apparition of project CLI commands. They are now always displayed even if the project is not initialised yet.
• Remove _aready_updated function which is no longer used, since no check is made to verify that the projec tis initialized
• Add a env argument to kedro mlflow init to enable to create the configuration in another ocation than "base"
• Remove the possibility to call kedro mlflow ui outside of the project (this is not a breaking change: this code was not usable until now since the command did not display outside of a project)
• Add an extra check in get_mlflow_config to inform the user if the project is not initialised yet.
• The mlflow.yml is now created by default in conf/local instead of conf/base

Checklist

• Read the contributing guidelines
• Open this PR as a 'Draft Pull Request' if it is work-in-progress
• Update the documentation to reflect the code changes
• Add a description of this change and add your name to the list of supporting contributions in the CHANGELOG.md file. Please respect Keep a Changelog guidelines.
• Add tests to cover your 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.

[codecov-io]

Codecov Report

Merging #162 (a345e26) into develop (ef3b0e2) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##           develop      #162   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           25        25           
  Lines          770       758   -12     
=========================================
- Hits           770       758   -12     

Impacted Files	Coverage Δ
kedro_mlflow/utils.py	100.00% <ø> (ø)
tests/test_utils.py	100.00% <ø> (ø)
kedro_mlflow/framework/cli/cli.py	100.00% <100.00%> (ø)
kedro_mlflow/framework/context/mlflow_context.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ef3b0e2...a345e26. Read the comment docs.