Add configurable project name to the browser title

[skttl]

Just saw this new feature #20145 and I love it.

I think it could be even better if you could configure a project name to be included in the title, so you could have Content | Umbraco | skrift.io or even Content | Umbraco | 24days.in (DEV).

I would prefer it as an appsetting, like Umbraco:CMS:ProjectName, and have it optional. So if it's filled, it's used in the title. If not, the title is just eg. Content | Umbraco.

By having it as an appsetting, you could easily switch the ProjectName by environment, eg. 24days.in (DEV) in development, and 24days.in in production.

You could also make favicon color an appsetting, so make the Umbraco logo use another color in different environments.