Feature Request: Rename Git Default Branch from "Master" to "Main" for New Projects

[paulsterling]

Issue description

To align with modern Git practices and terminology, I propose renaming the default Git branch from "master" to "main" for all new projects on Umbraco Cloud. We see an industry-wide shift towards more inclusive language and I think Umbraco Cloud projects should follow the latest Git conventions.

[timeverts]

I'd also be keen to see this happen, or at least provide a configuration option in the Cloud Portal for a new project to specify the default branch name. Has there been any further discussion at @UmbracoHQ about this?