virginmap overlay (fixes #32)

packages/client/src/board.scss

packages/client/src/components/CanvasWrapper.tsx

packages/client/src/components/Overlay/OverlaySettings.tsx

packages/client/src/components/Overlay/VirginOverlay.tsx

packages/client/src/components/Settings/SettingsSidebar.tsx

packages/client/src/components/Template.scss

packages/client/src/components/Template.tsx

packages/client/src/contexts/AppContext.tsx

packages/client/src/lib/canvas.ts

packages/client/src/lib/keybinds.ts

packages/client/src/lib/template.ts

packages/lib/src/net.ts