Copy Android pen handling code from SDLSurface to SDLControllerManager

[Susko3]

Description

Copies this fully correct pen handling code:

SDL/android-project/app/src/main/java/org/libsdl/app/SDLSurface.java

Lines 264 to 278 in 4231848

	} else if (toolType == MotionEvent.TOOL_TYPE_STYLUS || toolType == MotionEvent.TOOL_TYPE_ERASER) {
	pointerId = event.getPointerId(i);
	x = event.getX(i);
	y = event.getY(i);
	p = event.getPressure(i);
	if (p > 1.0f) {
	// may be larger than 1.0f on some devices
	// see the documentation of getPressure(i)
	p = 1.0f;
	}
	// BUTTON_STYLUS_PRIMARY is 2^5, so shift by 4, and apply SDL_PEN_INPUT_DOWN/SDL_PEN_INPUT_ERASER_TIP
	int buttonState = (event.getButtonState() >> 4) | (1 << (toolType == MotionEvent.TOOL_TYPE_STYLUS ? 0 : 30));
	SDLActivity.onNativePen(pointerId, buttonState, action, x, y, p);

to the existing half-correct pen handling code in SDLControllerManager.java.

This should probably be handled by a common function, but I was unsure where to put it. Probably in SDLActivity but that already has 2190 lines of code, which is discouraging.

[slouken]

Merged, thanks!