Implementing A Tutorial Stage

An early prototype of the tutorial stage that basically covers the game controls.

This tutorial is for the pc version, and I'll probably implement a separate one for mobile (and console, fingers crossed).

Basically disable all actions > when the player reaches a certain point in the map, the next 'dialog' is triggered and a new action is unlocked.

This hopefully allows players to slowly get adjusted to the controls and UI.

A simple quest is also implemented.