message: add Grid type definitions
diff: @@ -189,6 +189,10 @@ declare module '@primer/components' {
  scheme?: string
  }
  + export interface GridProps extends BoxProps, StyledSystem.GridProps, Omit<React.HTMLAttributes<HTMLSpanElement>, 'color'> {}
  +
  + export const Grid: React.FunctionComponent<GridProps>
  +
  export const CounterLabel: React.FunctionComponent<CounterLabelProps>
  export interface LabelProps extends CommonProps, Omit<React.HTMLAttributes<HTMLSpanElement>, 'color'> {
  @@ -457,6 +461,11 @@ declare module '@primer/components/src/Flash' {
  export default Flash
  }
  +declare module '@primer/components/src/Grid' {
  + import {Grid} from '@primer/components'
  + export default Grid
  +}
  +
  declare module '@primer/components/src/CounterLabel' {
  import {CounterLabel} from '@primer/components'
  export default CounterLabel
  