Ensure kit handles line endings consistently

[lfdebrux]

What

We currently use Unix line endings everywhere (see #1738), but some users might want to use Windows line endings. In those cases, when the kit creates new files, it should create them with Windows line endings also. Let's update our code to do that.

Why

We should use line endings consistently, and also respect the line endings users currently have.

Who needs to work on this

Developer

Who needs to review this

Tech lead

Done when

• Decide on a way to detect or give user option to choose line endings
• When we create a starter prototype all files use the same line endings
• After migration files keep their line endings and have consistent line endings
• When generating temporary files the line endings are consistent within each file

[lfdebrux]

We could look at the git eol config for this.

[joelanman]

to help try and prioritise this - what bad outcomes could this avoid? Or, whats the worst thing that could happen?

[ruthhammond]

Closed until this is raised as an issue by a user