**Description** Build the classic Minesweeper header. **Requirements** - [ ] **Mine Counter:** Display `Total Mines - Current Flags`. (Allow negative numbers). - [ ] **Timer:** Increment seconds from first click until Game Over. Format: `000` to `999`. - [ ] **Smiley Button:** - Center of header. - Resets the game board when tapped. - (Optional) "Ooh" face 😮 while user is pressing down on a grid cell.