Update Alpha 0.5 Test 2.3 (SMALL PATCH)

[New]:
- Added 2 new options, "HD Mode" and "SyS Mode", by default the game will be in "SyS Mode", a compressed 640x360 viewport mode used for simulating the game's pixely aspect and a majority of the lighting effects. However, I have found there's a big group of people who often find themselves with eye problems or vision problems when playing the game, so the optional "HD Mode" will enable a 1920x1080 viewport with no compression.

[Changes]:
- Pause menu completely redone.
- Made many of the main menu buttons and text less messy.