Game interrupt flows

[subcontrabass]

We need to create a flow for receiving or sending the following game possibility:

• draw
• takeback
• promotion
• resign
• pause
• game over

js notify to accept/ignore both on screen, and mirrored on launchpad

[mrharpo]

Resign

type: "gameState"
status: "resign"
winner: "white"

Draw offer

type: "gameState"
wdraw: true

Draw declined

type: "chatLine"
room: "player"
text: "Black declines draw"
username: "lichess"

Takeback

type: "chatLine"
room: "player"
text: "Takeback sent"
username: "lichess"

Takeback declined

type: "chatLine"
room: "player"
text: "Takeback declined"
username: "lichess"