Add ability to choose inset and visiablity for scroll view

[Sc4pego4t]

Summary

Describe the goal of this PR. Mention any related Issue numbers.

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]

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[RuiAAPeres]

Any update regarding this PR? ❤️

[Sc4pego4t]

yeah, I'm sorry, struggling with CLA signing. As I understood I should add commit with my email?

[Sc4pego4t]

this page seems broken, I can't find any accept button(

[Sc4pego4t]

What do you think can be a source of my problem with CLA? btw i see it in my setting in authorised apps

[AivarasGus]

I accidentally came across the same issue and this PR would come in really handy. @Sc4pego4t I'm rooting for you to get this merged 🙏

[Sc4pego4t]

@ste57 can you please help me? I've accepted policies, but merging is still blocked

[AivarasGus]

I think this shouldn't be true. bottomLayoutGuide.length is probably what it should be

Suggested change

	Default value is true.
	Default value is bottomLayoutGuide.length.

[simdani]

@AivarasGus @Sc4pego4t @ste57 created same pr with additional properties for tests and with license stuff fixed #121 if it's not possible to sign this one we can merge mine :)