Enforce style guide for Julia code

[CFBaptista]

Currently, there is no style guide for wflow's Julia code.
For improved code quality a consistent style across the team is needed.
The most popular style guides in the Julia community are:

1. YAS
2. Blue
3. SciML

One of these should be picked, configured and enforced.

Tasks

• Add configuration file for JuliaFormatter to the git repository
• Add configuration for "format on save" to the git repository
• Format entire repository

[verseve]

Probably good to check what style the Ribasim team is using and if we can also adopt that style, so this is consistent across the Product line.

[visr]

For JuliaFormatter we use the default style, with a few non-default options: https://github.com/Deltares/Ribasim/blob/main/.JuliaFormatter.toml

I should try SciML style JuliaFormatter again, I changed some parts I didn't like about it ;)

Though as a general style guide we go with https://docs.sciml.ai/SciMLStyle/stable/ since most our dependencies also do that, and I think it's the most actively maintained style guide.

[CFBaptista]

Okay, agreed. I am copying Ribasim's .JuliaFormatter.toml

[CFBaptista]

Wflow's and Ribasim's style guides are now in sync.

[CFBaptista]

@visr while skimming through Ribasim's repository I did not see a GitHub Action that blocks a PR if code is not properly styled. Have I missed something or do you enforce consistent styling in a different way?

[visr]

That's right. Since everyone is using the same VSCode dev environment with format on save, it's not really an issue. Perhaps later on we could use it as a pre-commit hook. For that I'd like JuliaFormatter to start a bit faster though.