Render pills in RTE (#1874)

* for now this can only work locally

* works

* added a test

* updated RTE

* revert package

* pr suggestion

* reverting package versions

* better naming

ElementX/Sources/Other/Pills/MessageText.swift

@@ -16,7 +16,7 @@
 
 import SwiftUI
 
-final class MessageTextView: UITextView {
+final class MessageTextView: UITextView, PillAttachmentViewProviderDelegate {
     var roomContext: RoomScreenViewModel.Context?
     var updateClosure: (() -> Void)?
     
@@ -44,6 +44,10 @@ final class MessageTextView: UITextView {
         invalidateTextAttachmentsDisplay(update: false)
         super.layoutSubviews()
     }
+    
+    func registerPillView(_ pillView: UIView) {
+        // No need to be implemented in this view
+    }
 }
 
 struct MessageText: UIViewRepresentable {