Improvement update

Many updates based on the feedback I received during the jam:

- Improved stealth section: guards are slower and their vision cone is smaller;
- Increased camera size;
- Reduced scale of the ui elements;
- Added some details to the map to make some zones more distinguishable;
- Tweening for the dialogue boxes, change in their shape and reduction in size;
- Changed a line of dialog to make it clearer where to get the knife;
- The log now shows only relevant information instead of every dialog line;
- A view of the map accessible with TAB or a ui button;
- Added a ui button to rewind while playing;
- The intro is now replayable from the main menu, and can be skipped with esc;
- Unique music lines for every ending;
- Fixed a whole lotta bugs;