Allow for disabling scrolling on textView in RichTextViewController

[charlemagneVI]

When using RichTextViewController with a UIViewRepresentable in SwiftUI, it would be helpful to be able to control whether the textView content is scrollable in the view controller.

The issue that occurs is that if you ever want to include the RichTextViewController amongst other SwiftUI content, the scroll behavior is always determined by the hardcoded value on textView.

If you have a scenario where your SwiftUI view looks like this:

struct ViewWithScroll: View {
    var body: some View {
        ScrollView {
            Text("Some Text")

            RichTextViewRepresentable()

            Button(action: {}) {
                Text("Some Other Content")
            }
        }
    }
}

The text content contained in RichTextViewRepresentable() has separate scroll behavior from the containing ScrollView

You can find my quick implementation in my fork here:
https://github.com/CharlemagneVI/rich-text-renderer.swift/commit/b7352ce83c456c110435044ee490690d3670e2fe

[startover205]

Good solution! But some of my content got clipped if I disable scrolling.

Scrolling enabled	Scrolling disabled

My workaround is to move the change to the implementation of renderDocumentIfNeeded of RichTextViewController.
Make the text view scrollable before rendering and disable the scrolling after rendering is done.

private func renderDocumentIfNeeded() {
    guard let document = richTextDocument else { return }
    
    textView.isScrollEnabled = true

    DispatchQueue.main.async {
        let output = self.renderer.render(document: document)
        self.textStorage.beginEditing()
        self.textStorage.setAttributedString(output)
        self.textStorage.endEditing()
        self.calculateAndSetPreferredContentSize()
        
        self.textView.isScrollEnabled = self.renderer.configuration.isScrollable
    }
}