Add textInteractionFlags to Text component

[MistahMojo]

The text interaction flag can now be given as a prop to the Text component.

As per issue #236.

Example usage:
<Text textInteractionFlags={1}>You Can Select Me!</Text>

Where 1 is from the Qt TextInteractionFlags enum: https://doc.qt.io/qt-5/qt.html#TextInteractionFlag-enum

Includes support for multiple flags using an | comparison, e.g. textInteractionFlags={1|2}

From testing: no16, TextEditable, does not appear to produce editable text as the Qt docs would indicate. However, this result can be achieved using a PlainTextEdit component if this functionality is really needed.

Docs are updated too.

[a7ul]

@all-contributors add @MistahMojo for code

[allcontributors]

@a7ul

I've put up a pull request to add @MistahMojo! 🎉