fix: add LoadingState.loadingStateViewType

Closes #37

Author: DylanCaiCoding

loadingstateview-ktx/src/main/java/com/dylanc/loadingstateview/LoadingState.kt

@@ -22,6 +22,7 @@ import androidx.annotation.StringRes
 import androidx.fragment.app.Fragment
 
 interface LoadingState : Decorative, OnReloadListener {
+  val loadingStateViewType: Any?
 
   @Deprecated("Use Activity.decorateContentView(this) instead", ReplaceWith("decorateContentView(decorative)"))
   fun Activity.decorateContentView(listener: OnReloadListener, decorative: Decorative) = decorateContentView(decorative)

loadingstateview-ktx/src/main/java/com/dylanc/loadingstateview/LoadingStateDelegate.kt

@@ -25,6 +25,9 @@ import androidx.fragment.app.Fragment
 class LoadingStateDelegate : LoadingState {
   private var loadingStateView: LoadingStateView? = null
 
+  override val loadingStateViewType: Any?
+    get() = loadingStateView?.currentViewType
+
   override fun Activity.decorateContentView(decorative: Decorative) {
     findViewById<ViewGroup>(android.R.id.content).getChildAt(0).decorate(decorative)
   }