FilterBridge: add ability to override feed title

[mrtnvgr]

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

This is not a problem as many feed readers allow their users to change the feed name, but I think it would be handy as an option.

Describe the solution you'd like

Simple option that'll allow the user to chair the feed name

Describe alternatives you've considered

Built-in abilities of feed readers.

[dvikan]

thanks for suggestion.