Add ability to choose background interaction mode (.dismiss / .forward or .none)

[ilia3546]

Summary

Related issue - #100

Now you can choose one of background interaction modes:

• .dismiss - Taps dismiss the modal immediately
• .forward - Touches are forwarded to the lower window (In most cases it would be the application main window that will handle it
• .none - Absorbs touches. The modal does nothing (Swallows the touch)

Example:

class MyPanModal: UIViewController, PanModalPresentable {

    ...

    var backgroundInteraction: PanModalBackgroundInteraction {
        return .forward
    }

}

I think now option allowsTapToDismiss can be marked as deprecated.

Requirements (place an x in each [ ])

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.

• [x] I've read and agree to the Code of Conduct.

• [x] I've written tests to cover the new code and functionality included in this PR.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

:white_check_mark: ilia3546
:x: Ilya Kharlamov

---

Ilya Kharlamov seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[devxoul]

I really look forward to have this functionality!

[a777med]

Please, could someone with write access review this PR? I have stopped using this library because of this issue. @jordanpichler @ste57 @TosinAF @Marcocanc

[jordanpichler]

Sadly I don't have write access to approve this PR.

@a777med you can always point your dependency manager (Cocoapods or Swift Package Manager) to @ilia3546 branch to include this PR. No need to wait for Slack to create a release with this PR 😉

[lhr000lhrmega]

Hi guys, it's been a while not have any update on this PR.

Do we have a plan to merge it?

[ivopintodasilva]

Works really well! 💯 Hope it gets merged soon