dragEnd event not sent when single-clicking gutter

[pweissenbacher]

Describe the bug
Package version: 4.0.0
When dragging the gutter, the events "dragStart/dragEnd" are working fine.
But when soley clicking the gutter, the dragStart event is fired, but the dragEnd event is not.

To Reproduce
Look at the small Stackblitz example (dragging not updating, but events fired as described)
StackBlitz Dev Mode
StackBlitz App Mode

[nomeaning777]

In the current implementation, the component fires dragStart when a mouse button is pressed.
However, it fires dragEnd only when the mouse cursor is moved and the button is released.
If mouse cursor is not moved, it emits gutterClick/gutterDblClick.
https://github.com/angular-split/angular-split/blob/main/projects/angular-split/src/lib/component/split.component.ts#L709

I think it is better to fire dragStart event only when a mouse button is pressed and the cursor is moved.
I will be happy to create a PR if this breaking change is acceptable.

[beeman]

@nomeaning777 I'm definitely interested in a PR that adds support for this (or maybe, fixes the bug that dragStart gets emitted when nothing gets dragged).

It would be awesome if it could be implemented with minimal amount of code changes, and add some cypress tests that prove the behavior.

I think we can publish that in a major version, maybe it can go into v5.

[beeman]

This fix is released in version 5.0.0 thanks to @nomeaning777 🎉

https://stackblitz.com/edit/angular-ivy-xhc5bj?file=src/app/app.component.html