[Valorant] Support new Escalation game mode

[surgeon]

• Related game:
  Valorant

• Related app:
  Valorant Tracker

• Feature description:
  There’s a new Escalation game mode in Valorant. At the moment, no events are fired to specify that you’re playing in this game mode.

• Impact for my app:
  High.

[Shargaas]

Hey @surgeon ,

Thanks for the request. We’ll discuss this internally and update you.