Improve mouse events and add secondary bindings

[rom1v]

On Android, a MotionEvent may use either a MOUSE or FINGER as source. Since scrcpy 1.0, it used a FINGER. But when --forward-all-clicks (now deprecated in favor of --mouse-bind=++++) was added, this caused a problem: it was not possible to press secondary clicks with a FINGER, so if this flag was set, it used a MOUSE (c7b1d0e):

scrcpy/server/src/main/java/com/genymobile/scrcpy/Controller.java

Lines 276 to 288 in cc8e613

	if (pointerId == POINTER_ID_MOUSE || pointerId == POINTER_ID_VIRTUAL_MOUSE) {
	// real mouse event (forced by the client when --forward-on-click)
	pointerProperties[pointerIndex].toolType = MotionEvent.TOOL_TYPE_MOUSE;
	source = InputDevice.SOURCE_MOUSE;
	pointer.setUp(buttons == 0);
	} else {
	// POINTER_ID_GENERIC_FINGER, POINTER_ID_VIRTUAL_FINGER or real touch from device
	pointerProperties[pointerIndex].toolType = MotionEvent.TOOL_TYPE_FINGER;
	source = InputDevice.SOURCE_TOUCHSCREEN;
	// Buttons must not be set for touch events
	buttons = 0;
	pointer.setUp(action == MotionEvent.ACTION_UP);
	}

FINGER was still useful for simulating pinch-to-zoom, rotate and tilt, because a double mouse pointer does not always work on all devices.

The fact that the decision to use either MOUSE or FINGER depends on the specific --mouse-bind value is weird, and cause issues: #5055 (comment)

The introduction of "mouse hover" in scrcpy v2.5 also causes issues on some devices, because in theory a "mouse hover" event should be with a MOUSE source: #5067

To fix both issues, always use a MOUSE source (regardless of the mouse bindings), except when simulating a virtual finger (pinch-to-zoom, rotate and tilt).

Fixes #5067

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Then, improve --mouse-bind to support secondary mouse bindings with Shift+click.

It is now possible to pass a sequence of secondary bindings:

--mouse-bind=xxxx:xxxx
             <--> <-->
         primary   secondary
        bindings   bindings

If the second sequence is omitted, then it is the same as the first one.

By default, for SDK mouse, primary bindings trigger shortcuts and secondary bindings forward all clicks.

For AOA and UHID, the default bindings are reversed: all clicks are forwarded by default, whereas pressing Shift+click trigger shortcuts.

scrcpy --mouse-bind=bhsn:++++  # default for SDK
scrcpy --mouse-bind=++++:bhsn  # default for AOA and UHID

Fixes #5055

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Here is a binary for Windows:

• scrcpy-win64-pr5076.zip SHA-256: ac38d4eb2577137f6846d41a82d8b76f7d1ed83ca5c2e0c499e6ba935bab276

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