Allow changing of browser page/tab title

[jpkelly]

Is this a feature relevant to companion itself, and not a module?

• I believe this to be a feature for companion, not a module

Is there an existing issue for this?

• I have searched the existing issues

Describe the feature

Allow the browser page/tab title of the admin UI to be edited via the admin UI.
Perhaps use the hostname of the machine companion is running on and/or make the title editable.

Usecases

In a situation where multiple instances of companion admin are open in different tabs this would make identifying the desired instance easier.

[Julusian]

Related to #2498