Add NetworkFollowerStatusView

Example/example-app/Sources/SessionFeature/NetworkFollowerStatusView.swift

+import ElixxirDAppsSDK
+import SwiftUI
+
+struct NetworkFollowerStatusView: View {
+  var status: NetworkFollowerStatus?
+
+  var body: some View {
+    switch status {
+    case .stopped:
+      Label("Stopped", systemImage: "stop.fill")
+
+    case .starting:
+      Label("Starting...", systemImage: "play")
+
+    case .running:
+      Label("Running", systemImage: "play.fill")
+
+    case .stopping:
+      Label("Stopping...", systemImage: "stop")
+
+    case .unknown(let code):
+      Label("Status \(code)", systemImage: "questionmark")
+
+    case .none:
+      Label("Unknown", systemImage: "questionmark")
+    }
+  }
+}
+
+#if DEBUG
+struct NetworkFollowerStatusView_Previews: PreviewProvider {
+  static var previews: some View {
+    Group {
+      NetworkFollowerStatusView(status: .stopped)
+      NetworkFollowerStatusView(status: .starting)
+      NetworkFollowerStatusView(status: .running)
+      NetworkFollowerStatusView(status: .stopping)
+      NetworkFollowerStatusView(status: .unknown(code: -1))
+      NetworkFollowerStatusView(status: nil)
+    }
+    .previewLayout(.sizeThatFits)
+  }
+}
+#endif