Add missing types (#76)

* feat(SteamAppOverview): Add types

* feat(SliderFieldProps): Add className type

* feat(ToggleFieldProps): Add highlightOnFocus type

* feat(AppDetails): Add types for libraryAssets.logoPosition

* feat(types): Add types to some globals

src/deck-components/ToggleField.tsx

@@ -4,6 +4,7 @@ import { CommonUIModule } from '../webpack';
 import { ItemProps } from './Item';
 
 export interface ToggleFieldProps extends ItemProps {
+  highlightOnFocus?: boolean;
   checked: boolean;
   disabled?: boolean;
   onChange?(checked: boolean): void;