[Request] "Borderless Window" as a Display Mode option

[some-username-here1]

Is your feature request related to a problem? Please describe. More or less being able to start TC2 in a borderless window everytime it launches, without having to add -sw -noborder to the launch options.

Describe the solution you'd like Adding said option in the title to list of Display mode under the video settings, given how Garry's Mod was able to add this feature for some time now.

Additional context Moved from #168 into its own issue.

[wgetJane]

the game already starts as borderless by default (use -border to prevent this)

[Ashetf2]

the game already starts as borderless by default (use -border to prevent this)

The point is that if someone wants to change their resolution config, they shouldn't have to restart the game to do so.

[Ashetf2]

For example, for me is important that this feature gets added because I want to use fullscreen but sometimes I need to change to noborder windowed to do demonstrations because OBS doesn't work properly with fullscreen, and I have to restart the game.