Select members before creating a room (UI for selection) (#766)

* add invite users in room flow

* add selectable user cell

* add screenshoots

* add unit test

* add button style

* add scroll to bottom when added user

* rebase screenshot from develop

* add changelog

* rename invite users files

* fix static viewModel

* fix buttonStyle, fix unit test

* UI test for selected user

* remove fixed height size

* fix saled width for horizontal cell

* add usersSection, screenshots

* use publishers pattern

* add selectable form button style

* add comment

* improve readability

* some rename on InviteUsers

* fix compile issues

* add search content

ElementX/Sources/Other/SwiftUI/Form Styles/FormButtonStyles.swift

@@ -20,6 +20,7 @@ import SwiftUI
 enum FormRowAccessory: View {
     case navigationLink
     case progressView
+    case selection(isSelected: Bool)
     
     var body: some View {
         switch self {
@@ -29,6 +30,10 @@ enum FormRowAccessory: View {
                 .foregroundColor(.element.quaternaryContent)
         case .progressView:
             ProgressView()
+        case .selection(let isSelected):
+            Image(systemName: isSelected ? "checkmark.circle.fill" : "circle")
+                .font(.element.body)
+                .foregroundColor(isSelected ? .element.primaryContent : .element.tertiaryContent)
         }
     }
 }
@@ -124,6 +129,10 @@ struct FormButtonStyles_Previews: PreviewProvider {
                     Text("Hello world")
                 }
                 .buttonStyle(FormButtonStyle())
+                Button { } label: {
+                    Text("Selection")
+                }
+                .buttonStyle(FormButtonStyle(accessory: .selection(isSelected: false)))
             }
             .formSectionStyle()