Add ability to change default branch

[msfjarvis]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates

📜 Description

Adds a configuration option to set the repository branch and wires in the migration flow to make
the switch locally.

💡 Motivation and Context

In accordance with our policy to only resolve issues once they are 3 years old (I jest), this PR
fixes #298.

💚 How did you test it?

Created a new branch in my remote repository, changed the setting to match it and then confirmed that
the reset to remote operation correctly switched me to it.

📝 Checklist

• I formatted the code with the IDE's reformat action (Ctrl + Shift + L/Cmd + Shift + L)
• I reviewed submitted code
• I added a CHANGELOG entry if applicable

🔮 Next steps

This is going to need some sort of onboarding flow, perhaps redirecting users to a wiki page?

📸 Screenshots / GIFs

Screenshot

[msfjarvis]

The things that are up for discussion here:

1. Onboarding flow - how does that work?
2. Current migration strategy - is it enough?

[fmeum]

The things that are up for discussion here:

1. Onboarding flow - how does that work?
2. Current migration strategy - is it enough?

I would personally always do something like this using actual git. I could then simply delete my PS repo and clone with the new branch name set. Unless I'm missing something here, I would say we don't need additional logic/onboarding.

[msfjarvis]

The things that are up for discussion here:

1. Onboarding flow - how does that work?
2. Current migration strategy - is it enough?

I would personally always do something like this using actual git. I could then simply delete my PS repo and clone with the new branch name set. Unless I'm missing something here, I would say we don't need additional logic/onboarding.

Hm yeah I guess you're right about.