Input System flow to Move units

[StefanoFiumara]

Create a new set of input states to allow the player to move units during their turn.

• Refactor CardSelectionState into a new initial state for the Input System
  • If player clicks on a card in their hand, use the existing PlayCardAction flow
  • If player clicks on a tile with a moveable unit, write a new flow to trigger MoveUnitAction
• Create Animation for MoveUnitAction in MapView