Updated gamepad input reading

[Arman-AIi]

Changes:

• Decluttered
• Prints button true/false values AND analog stick horizontal and vertical values (-1 to 1)
  Requests:
• Make buttons bindable in the keybinds
• Set default buttons
• Use left stick for movement and movement angle (like how the left joystick on mobile turns you in the direction you're moving)
• Use right stick for aiming WITH the aim line (again, like mobile) but NOT for shooting (this will use a different button)

Notes:
Do NOT use GamepadEvent to detect inputs for binding, the gamepad buttons are not events, only values. Only gamepad connection and disconnection is part of GamepadEvent
gamepadLeftStickHorizontal, gamepadLeftStickVertical, and their right stick counterparts are each 2 different values, combine them into a radian value using Math.Atan2 to use for movement angle and aim angle respectively