Expose parameter management function

[rtimms]

The parameter command line interface requires users to use bash. However, there are some python functions defined in parameters_cli.py that we could expose so that e.g. instead of

%%bash
pybamm_edit_parameter lithium_ion

you can just do

pybamm.edit_parameter(["lithium_ion"])

directly in python.

[rtimms]

Update this notebook too

[soma2000-lang]

Working on this issue@rtimms

[soma2000-lang]

@Saransh-cpp @tinosulzer ,I will have to edit the edit_parameter function in the cli_parameter.py

[rtimms]

You can already do

from pybamm.parameters_cli import edit_parameter
edit_parameter(["lithium_ion"])

so it's just a matter of importing edit_parameter in the __init__.py in the pybamm directory.

We should also add captions to the training videos where we talk about the CLI showing the new method (which will be useful for windows users).

[valentinsulzer]

edit_parameter function will be removed now that all parameters are specified by single python files, which makes it pretty intuitive how to specify your own (to be done after #2334 is merged)