Add a --name option to prismic init

[angeloashmore]

Is your feature request related to a problem? Please describe.

prismic init creates a repository with a generated domain and uses the domain as the display name. There is no option to set the display name at creation time. prismic repo create has --name for this. prismic init does not.

In the recorded eval runs for #276, 3 of 6 failed trials stopped to ask the user for a repository name. The agent had no option to pass one.

Describe the solution you'd like

Add a --name option to prismic init. Pass the value to createRepo as the display name, the same as prismic repo create --name.

npx prismic init --name "Marketing Site"

Describe alternatives you've considered

• Keep init as it is. Run prismic repo set-name "Marketing Site" after init. This works but takes two commands.
• Make init explain in its help that the domain is generated and that repo set-name renames the repository. This is the plan in evals: agent stops before it runs prismic init #276.

Additional context

Found while designing the fix for #276. Evaluate at a later time. The --repo option connects to an existing repository by domain, so --name must not be confused with it.